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HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
HCI - Case Study - Digital Fridge
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HCI - Case Study - Digital Fridge

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Detailed case study on digital fridge as per human computer interaction rules.

Detailed case study on digital fridge as per human computer interaction rules.

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  • 1. “Designing Digital Systems: The Digital Fridge Case Study”Furrukh Ali Baig (10284249)Students (Human Computer Interaction)University of Hertfordshireferrukh87@hotmail.com0092-345-3037418May 2011
  • 2. Furrukh Ali BaigPage 2 of 26Table of ContentsTable of Contents............................................................................................................ 2Acknowledgement........................................................................................................ 31 Introduction .............................................................................................................. 42 Current Principles and Standards .......................................................................... 42.1 ISO-9241............................................................................................................. 42.2 My proposed Approach ....................................................................................... 63 User and Usage Modeling ....................................................................................... 73.1 User Analysis ...................................................................................................... 73.2 Usage Analysis ................................................................................................... 83.3 User Typing......................................................................................................... 93.4 User Profile ....................................................................................................... 104 Scenarios: Usage Example ................................................................................... 145 Hierarchical Task Analysis.................................................................................... 156 Requirement Specification .................................................................................... 176.1 Project Drivers................................................................................................... 176.2 Project Constraints............................................................................................ 186.3 Functional Requirements .................................................................................. 196.4 Non-Functional Requirements........................................................................... 196.5 Project Issues.................................................................................................... 206.6 Possible Extensions .......................................................................................... 207 Designs ................................................................................................................... 217.1 Story Boards ..................................................................................................... 217.2 Prototype........................................................................................................... 238 Review of Work....................................................................................................... 258.1 References………………………………………………………………………..........258.2 Bibliography……………………………………………………………………............26
  • 3. Furrukh Ali BaigPage 3 of 26AcknowledgementsI like to acknowledge the support of our colleagues who participated in the miniprojects and discussion regarding digital fridge on study net from where this workinitiated. I would also acknowledge Martina A. Doolan, our module leader for guidingus at every point when we got stuck, as well as the input of any supervisor or otherinternal or external assistance because without their effort, the completion of thereport would not have been possible.
  • 4. Furrukh Ali BaigPage 4 of 26IntroductionThe aim of this project is to introduce a new digital fridge by DF to the electronic marketwhich is highly equipped with the latest technology elements and is easy to use. The fridgeis highly equipped with automatic ordering through specialized e-commerce websites, canperform calls over 2G and 3G networks, have CCTV monitoring and facilitate the end userthrough latest recipes available. The whole computer system is an integrated part of thefridge and the fridge software runs in KIOSK mode which can be operated through a 15 inchtouch screen monitor. The fridge also provides its user with recipes, which helps them tomake new food for themselves and family.Current Principles and StandardsISO are one of the most effective and suitable usability standards.ISO is a worldwidestandardization organization which develops international standards and identifies set ofdistinct four aims for standards,1) Cooperative Understanding2) Health, Safety and Protection of environment3) Interface & interchange ability4) Fitness for purpose.ISO-9241ISO-9241 consists of various parts and each part deals with particular category.Part 3 is specialized for “Visual Display Requirements” that deals with design issues forvisual display terminals and its performance.Part 5 of the ISO-9241 deals with “Workstation layout and postural requirements” whichexplains the workplace in which the user can easily adopt a comfortable and efficientposture.Part 7 is about “Display requirements with Reflection” which explains the amount of glareand various forms of reflections from display screens.Part 9”Requirements for non-keyboard input devices” explains in depth the requirementof input devices such as mouse, touch screens and other pointing devices along withtheir performance tests.Part 12 “Presentation of information” deals with specific issues involved in representingand presenting information in visual forms.Part 13 is about” User Guidance” that explains more about different forms of userguidance including tutorials, documentation, help videos and error-handling systems.
  • 5. Furrukh Ali BaigPage 5 of 26Part 14 “Menu Dialogues” contains a large number of information regarding relevantresearches.Justification and ExplanationISO-9241 suits best to this project and evaluation of ISO-9241 over the project is asfollowing.Part 3 – The LED touch screen of the fridge should be stable, legible and stable undernormal circumstances.Part 5 -o Versatility/flexibility –It should be possible to perform various tasks at thedigital fridge.o Fit- In a digital fridge a fit needs to be there between the tasks performs andthe needs.o Posture – Digital fridge encourages the user to perform tasks during differentpostures.o Maintenance/ adaptability – Maintenance access should be easy and shouldbe able to adopt the changing requirements.Part 7- LED touch screen should give best quality picture in day lights and shouldhave proper image luminance ratio with reflections.Part 9 - It is considered useable if users can attain an acceptable level ofperformance on a specified task in digital fridge and uphold an acceptable level ofattempt, satisfaction and should achieved best results when usability test is executedon the digital fridge.Part 12 – The users can easily perform the perceptual tasks very easily on the digitalfridge like searching for information on the screen. Seven guiding principles shouldbe fulfilled by the information provided such as; clarity, consistency, detect ability,comprehensibility etc.Part 13 – The digital fridge should have some help and video tutorials for the users tohelp them going through the software, direct error reporting should be there to reportany error occurred in the fridge.Part 14 – Hierarchical menu is recommended in the fridge software to have moreeasily access through different options. Wide scrolling bars would allow user to havemore accessibility font and menu size may be resizable to achieve more usability.
  • 6. Furrukh Ali BaigPage 6 of 26My Proposed ApproachThe fridge is highly equipped with latest technology and is in accordance with the ISO-9241standards. The fridge should have 15 inch touch screen monitor in compliance with the part3, 5 & 7 of the ISO-9241, each section of the software contains the main menu shortcut sothat any transaction can be terminated at any time which enhances the usability. Menu isdesigned in hierarchical structure along with themes for particular user to have moreinteraction with the fridge which is in accordance with the ISO-9241 Part-14 and Part-12, auser logs in through its gesture and particular theme and personal settings will appearaccording to that user, the gesture in implemented on the touch screen and fulfil the ISO-9241 Part 9.The fridge also provides its user with recipes, which helps them to make new food forthemselves and family. The help section of the software also provides video tutorial for userassistance and firmware update option to update their firmware for better performance andfunctionality according to ISO-9241 Part-13.The fridge is equipped with a bar code reader that will allow the user to update their food listdatabase along with food expiry details. The GPRS modem is built in the system which iscompatible with 2G and 3G networks and allows user to make calls through the fridge forthis purpose a MIC and a speaker is integrated in the system to have better voice quality andthey should be in compliance with the ISO-9241 Part-9.The digital fridge can be connected to a printer in order to print list of items for the user whowanted to buy any item by going physically to the store. For automated ordering throughspecialized e-commerce websites, an Ethernet port is provided so that the fridge can beeasily connected over internet.
  • 7. Furrukh Ali BaigPage 7 of 26User and Usage ModellingUser AnalysisPersona 1: Maria RabelloMaria is a doctor by education but now caring her family by acting as a housewife .She is 35of age having two children, both them are school going .She is familiar with computer andknows how to operate it; as she operates the computer often. She is a very careful andconscious about cleanliness. She likes going out for shopping because according to her it’sthe only time she spent for herself and enjoys it a lot. She is a very social kind of lady andinvites friends to her place for dinner parties very frequently. She is a very good cook andloves to experiment in preparing new kind of dishes. Maria is very health conscious andrelies on the new food recipes which give herself and her family a very good health, in termsof proper nutrition’s provide by the daily food.Persona 2: Ian JohnsonIan is a student at a first degree college. He is 23 of age and a bachelor by marital status. Helives alone in a rented house. Being a student he is well familiar with computer and internet.Ian is very lazy in doing house work and is very careless in all terms. He hates shopping as itis a waste of time going and browsing around for stuff, on the other hand he prefers onlineshopping so that in this way he can save the time for his studies. He is not social at all as hedidn’t find any leisure time except his studies. He hates cooking food and most of the timeprefer ‘ready to eat meals’; for him food is an essential part of his life, so he just prefer eatingthem rather than going into nutrition or fat values.
  • 8. Furrukh Ali BaigPage 8 of 26Usage AnalysisUsage Analysis is the scenario in which knowledge of usage statistic is achieved.Persona 1: Maria RabelloFrequency of Use: Maria being a housewife; the frequency of using digital fridge is veryhigh or very much.Duration of Use: If 15 minutes are taken each time to complete a transaction on digitalfridge then duration of use may range from 1hr to 3 hrs daily.(Assumption: Breakfast,Brunch, Lunch, Supper, Dinner; if each transaction takes 15 min. then it sum up to 1hr 15min.)Environment of Use: The environment is a clean/tidy/neat kitchen, as Maria being a doctorand housewife is very careful about tidiness and cleanliness resulting in non oily and nondusty environment.Interruptions: Interruptions may have two types, Hardware interruptions and Softwareinterruptions.Hardware Interruption: Hardware Interruption is less in Maria case; as she will carefullyhandle the fridge doors and accessories.Software Interruption: Software interruption is also less in Maria case; as she will alsocarefully use the software of digital fridge.Persona 2: Ian JohnsonFrequency of Use: Ian being a student; the frequency of using digital fridge is an averageuse.Duration of Use: If 15 minutes are taken each time to complete a transaction on digitalfridge then duration of use may range from 30 min to 1hrs 30 min daily. (Assumption:Breakfast, Supper, Dinner; if each transaction takes 15 min. then it sum up to 45 min.)Environment of Use: The environment is a dirty/untidy kitchen, as Ian being a student andcareless person cleans the kitchen often resulting in dusty and oily environment.
  • 9. Furrukh Ali BaigPage 9 of 26Interruptions: Interruptions may have two types, Hardware interruptions and Softwareinterruptions.Hardware Interruption: Hardware Interruption is high in Ian case; as he will roughly handlethe fridge doors and accessories causing damage of touch screen or barcode scanninghardware error.Software Interruption: Software interruption is also high in Ian case; as he will also roughlyuse the software causing stack overflow of multi operation overload of random accessmemory in digital fridge.User TypingCook: This is one of the user types which are mainly concerned with fetching and puttingfood into digital fridge along side with getting help through recipes.Manager: This is the manager of the retail store which is concerned with the training of theretail staff so that the retail staff will furthermore elaborate the features and working of thedigital fridge to their customers, who comes in the store in seek interest in having ademonstration of the digital fridge from the store staff. (Assumption: for this reason thereshould be a manager tab inside the help menu, which has a video illustration or a videodemo, providing information on using the features of digital fridge.)Valued End Users: These types of user are most valued and are the end users of the fridge,who goes to the retail store and buys the digital fridge for their personal use. Theirconcerned is to use all the functionalities and options being provided by the digital fridge.User Typing Relation with Persona: Maria and Ian are ours valued end users in full andcook in partial as their needs lie within both categories.
  • 10. Furrukh Ali BaigPage 10 of 26User ProfilingPersona 1: Maria RabelloCharacteristics Notes oncharacteristicsRequirements Implied Features inApplicationType of User Novice Easy operation offunctionality and stepby step proceduresrequiredMenu listing andhierarchical structureof menu is providedalong with scroll bar.Age Range 30 – 55 May have colourblindness or visualacuity.A sober colour themewith attractivecolours isimplemented, withouthaving red and greencolour in any theme.Large Icons withlabels are alsoprovided.Frequency of Use High Fast processing andless time to completetransaction.Menu and Scrollingis provided with leastnumber of steps tocomplete eachtransaction.ComputerExperienceBeginner Less complexity ofbrowsing around thesoftware.Icons with labelsprovided in the menuto have visual easetoo. All options areprovided on the mainmenu to have a stepby step procedure.Video tutorial alsoprovided in helpsection.Education Doctor/BachelorsDegreeGeneral terminologiesrequired for userEasy and generalwords are used for
  • 11. Furrukh Ali BaigPage 11 of 26without havingcomputers degreebrowsing within themenus.Goals Easy Operation Specific, menu tabsrequired.Menu tabs along withlabels which are inhierarchy is providedalongside with widescroll bars.Language skills English (UK) Multiple languages Languages of mostof the countries areprovided.Training Training required Training may berequired due to novicecomputer userTutorial on how touse this fridge isprovided in the helpsection along withvideo demo.Other system used MS Windows Don’t able to browseinto any other featureexcept the digital fridgesoftware.The softwareexecuting in a KIOSKmode ,Time Factor High priority Fast access to optionsrequiredSoftware is lightweight created andtested beforedeploying providinghigh access inmenus and incompleting anytransaction.Others Relevant/Accurate -- --Persona 2: Ian JohnsonCharacteristics Notes oncharacteristicsRequirements Implied Features inApplicationType of User Beginner Easy operation offunctionality and stepMenu listing andhierarchical structure
  • 12. Furrukh Ali BaigPage 12 of 26by step proceduresrequiredof menu is providedalong with scroll bar.Age Range 20 – 35 May have specificmoods different times.A sober colour themewith different moodsis implemented,without having redand green colour inany theme. LargeIcons with labels arealso provided.Frequency of Use Low, often, roughuseFast processing andless time to completetransaction, as the useris careless.Menu and Scrollingis provided with leastnumber of steps tocomplete eachtransaction,hardware andsoftware is highquality passed.ComputerExperienceExpert May stuck in somecase.Icons with labelsprovided in the menuto have visual easetoo. All options areprovided on the mainmenu to have a stepby step procedure.Education First DegreeCollegeGeneral terminologiesrequired.General words areused for browsingwithin the menus.Goals Easy Operation Specific, menu tabsrequired.Menu tabs along withlabels which are inhierarchy is providedalongside with widescroll bars.Language skills English (UK) Multiple languages Languages of mostof the countries areprovided.
  • 13. Furrukh Ali BaigPage 13 of 26Training No TrainingrequiredMay stuck in someoptions.Tutorial on how touse this fridge isprovided in the helpsection along withvideo demo.Other system used MS Windows Don’t able to browseinto any other featureexcept the digital fridgesoftware.The software isexecuting in a KIOSKmode ,Time Factor High priority Fast access to optionsrequiredSoftware is lightweight created andtested beforedeploying providinghigh access inmenus and incompleting anytransaction.Others Relevant/Accurate -- --
  • 14. Furrukh Ali BaigPage 14 of 26Scenario: Usage Example.Persona 1: Maria RabelloIt’s a quite nice sunny afternoon and Maria decided to eat some oranges, she all of suddenwent to her brand new digital fridge and applies her personal gesture among the 9 dots onthe screen which brings up all her personalized settings like themes. She then touches theFood Details icon from where she can then goes to get food icon. In the get food menu shewill select fruits so that oranges can be selected further, after selecting oranges she willselect the quantity of oranges that she wanted to withdraw from the fridge. After selectingquantity she will click open door to get her oranges from the fridge, on closing the door shesmiled in response to see a thank you and transaction complete message on the screen.Assumption:* login is only used to maintain the personalized settings like theme colour etc. for thatparticular user* Quantity of food is based on the food which is placed in the fridge after barcode scanning.* After Open door click, the door will release the lock automatically but the transaction wouldnot be completed until the food is scanned by barcode reader and the door is closed.Persona 2: Ian JohnsonIt’s a busy morning and john has a lot of things in his to do’s list, at first he wants to ordersome juices online so that he can refresh himself. He rushes towards his new shiny digitalfridge and applies his gesture among the nine dots, the whole themes changes to bluecolour which cheers his mood. He then click on the ordering icon from the main menu andgoes to item category list that is provided by Sainsbury’s , he clicked on juices and order 1 ltrmarinda for himself, as there is a offer by the store on 12 marinda so he order this quantity inthe quantity section. he then click on the button which says order online as he doesn’t wantto go to the store physically. He inserted his personal details and click done. Now he isrelaxing on his chair and waiting for his drink to deliver as he gets the confirmation receipt ofhis order which also relaxes him in security purposes.Assumption:* login is only used to maintain the personalized settings like theme colour etc. for thatparticular user* only those stores are mentioned in the store selection menu which has specific maintainede-commerce websites.* The list of items and prices are fetched from their websites by parsing the website data, sothat it can be easily accessed by the end user in KIOSK mode.
  • 15. Furrukh Ali BaigPage 15 of 26*Print list will automatically print the list of items clicked from external printer; thisfunctionality is for those users who want to shop that particular store physically.*User id and password will be entered through gesture recognition system; this system is thesame as the one which is used for login purpose.Hierarchical Task AnalysisPersona 1: Maria Rabello1. In order to get food from digital fridge.1. Apply personalized gesture to log in.2. Click ‘Food Details’ icon on main menu.3. Click ‘Get Food’ icon from food details menu.4. Now click particular Category from Get Food menu.4.1 Click the particular item from list.4.2 Click the button to confirm the quantity.4.3 Click ‘Open door’ to release door lock.5. Take out the specific food.6. Scan the barcode from barcode reader.7. Close the door to complete transaction.In order toget food fromdigital fridgeApplypersonalizedgesture to loginClick ‘FoodDetails’ iconon mainmenuClick ‘GetFood’ iconfrom fooddetails menuNow clickparticularCategory inGet FoodmenuTake out thespecific foodScan thebarcode frombarcodereader.Close thedoor tocompletetransactionClick theparticularitem from listClick thebutton toconfirm thequantityClick ‘Opendoor’ torelease doorlock01 2 3 4 5 6 74.1 4.2 4.3Plan 0:do 1-2-3-4.1-4.2-4.3-5-6-7
  • 16. Furrukh Ali BaigPage 16 of 26Persona 2: Ian Johnson0. In order to shop food from digital fridge.1. Apply personalized gesture to log in.2. Click ‘Ordering’ icon from main menu.3. Select store from store list.3.1 Click on food items category.3.2 Click on particular item from the list.4. Insert the quantity by clicking on the touch nomad & then click done.5. Choose ‘Place order Online’.5.1 Enter User Name and Password through gesture system and thenclick done.5.2 Click Print after confirmation receipt is shown or else click done.Plan 5:do 5.1 -5.2Plan3:do 3.1 -3.2In order toshop foodfrom digitalfridgeApplypersonalizedgesture to loginClick‘Ordering’icon frommain menuSelect storefrom storelistInsert thequantity &then clickdoneChoose Placeorder onlinefrom themenu01 2 3 4 5Plan 0:do 1-2-3-4.1-4.2-4.3-5-6-7Click onfood itemscategoryClick onparticular itemfrom the list.3.1 3.2Enter UserName andPassword &Click Done.Click one optionfor transactioncompletion.5.1 5.2
  • 17. Furrukh Ali BaigPage 17 of 26Requirements and SpecificationProject DriversThe Purpose of ProductCook: This is one of the user types which are mainly concerned with fetching and puttingfood into digital fridge along side with getting help through recipes.Manager: This is the manager of the retail store which is concerned with the training of theretail staff so that the retail staff will furthermore elaborate the features and working of thedigital fridge to their customers, who comes in the store in seek interest in having ademonstration of the digital fridge from the store staff. (Assumption: for this reason thereshould be a manager tab inside the help menu, which has a video illustration or a videodemo, providing information on using the features of digital fridge.)Valued End Users: These types of user are most valued and are the end users of the fridge,who goes to the retail store and buys the digital fridge for their personal use. Theirconcerned is to use all the functionalities and options being provided by the digital fridge.Other Stakeholders:Stakeholders IntrestClient Digital Fridge PLC.Developing /Test Team ---Sales Outlets Train the store staff regarding the goods ofthe digital fridge.End Users Main User of the fridgeFood Delivery CompaniesTo get the best out of the digital fridge, thedigital fridge is capable to parse the datafrom major stores websites and will showthem on orderings menu, from where theuser can order .These major stores are likeSainsbury’s, Asda etc.
  • 18. Furrukh Ali BaigPage 18 of 26Project ConstraintsMandated ConstraintsSystem should be running in Kiosk mode.1) There should be no keyboard, not even virtual keyboard.2) Input and Output of food is done via barcode scanner.3) Red and Green Colour should not be used; as this colour is not suitable for eye blindpersons.4) Internet Connection is provided to the fridge.5) GPRS modem should be build within the fridge to make calls.6) The Lock should be semi automatic that can be open through hand as well as by thefridge software.7) The cooling system of the fridge can be controlled by software.8) Speaker and Mic is provided to dial and receive calls.Naming Conventions & AssumptionsNone Defined.Relevant facts & Assumptions1) System must be integrated within the digital fridge.2) Barcode Reader is also an integral part of the digital fridge.3) GPRS modem is also an integral part of the digital fridge.4) Camera should be integrated at the top of the fridge to cover wide area for CCTV.5) System Interface should not be window based it’s a full screen interface with nocancellation button; to stop the KIOSK mode.Display Requirements1) The screen should be an LED (Light Emitting diode) screen, so that better resolution andquality can be achieved in day times or in high light areas.2) Fonts should be Arial, 14 size by default but can be changed by the user according totheir needs.3) Screen size should not be more or less than 381mm or 15 inches.
  • 19. Furrukh Ali BaigPage 19 of 26Functional Requirement1) The screen should be an LED (Light Emitting diode) screen, so that better resolution andquality can be achieved in day times or in high light areas.2) The software for gesture recognition should be fast enough to capture all gestures thatare made by the users.3) The overall computer system handling all the functionality should be updated/latestenough to handle multiple transactions at a single time.4) Barcode reader is an essential part of the system.5) CCTV is an essential part of the system.6) GPRS modem should be able to handle all kind of latest technology up-to-date i.e. 2G or3G.7) The lock is a semi controlled lock so that the door can be unlocked by the user as well asby the software.8) The cooling system of the fridge can be controlled by the software too.9) Speaker and Mic is integrated within the system to dial and receive calls.10) Ethernet port is provided within the fridge with a LAN Modem, in order to connect thefridge with the internet.11) A hard disk of acceptable range is integrated in the system, to record at least 24 hours ofCCTV, address book for calling and database of record of food stuff for online and offlinetransactions.Non-Functional Requirements1. Attractive colour themes should be used, Red and green colours should be avoided tohelp old age and colour blind persons.2. A firmware update option should be in listed in the help and setting menu to updatefirmware at any time.3. Possible error occurs in the system should be reported to the fridge company via internetto improve the quality of software.4. Fonts should be Arial, 14 sizes by default but can be changed by the user according totheir needs.5. Screen size should not be more or less than 381mm or 15 inches.6. It may have circuit security fuses built in with the system so that if any part of the fridgefails, it will not damage the other parts of the machine.7. A device for voltage stabilizing can be used to avoid voltage fluctuations.
  • 20. Furrukh Ali BaigPage 20 of 268. Fridge may have an error reporting too which also reports the user and companyregarding any malfunctioning or damage of any electrical/software part within the fridge,to end user the fridge may pop up a window on screen giving warning regarding the faultand a button for seeking “technical assistance” can be pressed to inform the company.Project Issues and their SolutionsThe fridge may have these major issues;Problem # 1May not target the market of rural or countryside areas of country as most of themmay have their own language.SolutionDisplay elements can be used in variety to eliminate the language usage.Problem # 2The price of the digital fridge may be high due to such functionality and componentsintegration which may lead towards a market failure rather than a success.SolutionFridge may have different models with low, medium and high functionality and the price ofthe fridge may vary, depending upon the model.Problem # 3Lack of response from the maintenance team causes bad customer reviews regarding theproduct that basically influence the whole project.SolutionProper and prompt maintenance team, having highly skilled workers to solve issues maylead to success of the overall project.Possible Extension1) Xtraytmby bartech can be implemented in the digital fridge, Xtraytmis a tray that can befixed anywhere inside the fridge, it will detect the item automatically regardless the sizeand weight of the object this can be implemented to get fully automatic inventory of stuffin the digital fridge.[1]
  • 21. Furrukh Ali BaigPage 21 of 262) E baskettmby bartech can be implemented in the vegetable sections to detect thevegetable automatically that are placed in the vegetable section.[1]3) Shock proof doors can be implemented in the digital fridge to avoid any damage byrough usage. [3]4) Simple LED screen can be replaced by SAMSUNG AMOLED screens to get betterpicture quality and resolution in day times.[2]5) The body of fridge can be replaced from plastic to stainless steel or special UV coatingcan be done in order to avoid scratches and rust.[3]6) Specialized applications can be added to the software to make the digital fridge moreattractive and advanced like VOIP, video conferencing (Skype Add-ons can be added )and gaming software that are based on gesture recognition (e.g. Kinnect by XBOX 360can be integrated).DesignsStory BoardsPersona 1: Maria RabelloMaria will come towards the frdige. She applies her personalized gesture toLogin.She will go through the heirarchicalmenu.Shw will click on the open door button inmenu and the opens itself
  • 22. Furrukh Ali BaigPage 22 of 26She will take out the fruits she wanted and the fridge will be showing her a thank youscreen.Persona 2: Ian JohnsonIan will walk towards the frdige in the kitchen He will apply his personalized gestureHe will then browse into the herarchical menu He will then put up his credit card detailsthrough gesture systemAfter payment he will send a print out thereceipt to the printerHe will then walk away with the confirmationreceipt.
  • 23. Furrukh Ali BaigPage 23 of 26PrototypePrototype applications are usually more complete implementations, whereas storyboardscover a limited set of (usually static) screens.How Maria Rabello get food from Digital Fridge.(Assumptions are cleared at the bottom of this table)2. 14 inches screen with 9 visible dots forgesture recognition.3. Icons along with their Labels should beused.Heirarchical menu approch used with homebutton on every screen to cancel transaction.Heirarchical menu approch with visible iconsand labels.Wide scroll bar for easy navigation and itemsin a list format for easy navigation.Quantity fetched from database visiblenumbers.Semi automatic lock will release onpressing this button.Greeting message after completion oftransaction to ease customers.
  • 24. Furrukh Ali BaigPage 24 of 26Assumption:* login is only used to maintain the personalized settings like theme colour etc. for thatparticular user* Quantity of food is based on the food which is placed in the fridge after barcode scanning.* After Open door click, the door will release the lock automatically but the transaction wouldnot be completed until the food is scanned by barcode reader and the door is closed.Persona 2: Ian JohnsonHow Ian Johnson shop online from Digital Fridge.(Assumptions are cleared at the bottom of this table.)Easy nine dots gesture system forcustomers.Home icon on every page to cancel anyoperation at any time.Specialized maintained e-commerce storewebsites integeration.Icon along with label for easy navigation .Wide scroll bars with listing of items easy tounderstand.Home button on every page tocancel transaction any time.Easy quantity entry by pressing the big largevisible numbers.
  • 25. Furrukh Ali BaigPage 25 of 26Wide scroll bar for easy navigation ,twooptions either print out list of items or placeorder.Credit card details can be inserted throughgesture system fast,easy.Greeting message after completion of transaction to ease customersAssumption:* login is only used to maintain the personalized settings like theme colour etc. for thatparticular user* only those stores are mentioned in the store selection menu which has specific maintainedwebsites.* The list of items and prices are fetched from their websites by parsing the website data, sothat it can be easily accessed by the end user in KIOSK mode.*Print list will automatically print the list of items clicked from external printer; thisfunctionality is for those users who want to shop that particular store physically.*User id and password will be entered through gesture recognition system; this system is thesame as the one which is used for login purpose.References1. Bartech (1988), “Automatic Minibar -Special Projects” [Online] Available at:http://www.bartech.com/minibars.php# [Accessed on: 10-4-2011].2. Samsung, “AMOLED Screens” [Online] Available at: http://amoled.samsungsdi.com/[Accessed on: 10-4-2011].3. Won-Jin Kim(2009), “Effective Design of Cushioning Package to Improve ShockproofCharacteristics of Large-Sized Home Appliances” [Online] Available at:http://www.informaworld.com/smpp/content~db=all~content=a909289609 [Accessed on:11-04-2011].
  • 26. Furrukh Ali BaigPage 26 of 264. Microsoft, “Kinnect for XBOX-360” [Online] Available at: http://www.xbox.com/en-GB/kinect [Accessed on: 11-04-2011].5. Elissa Baxter, (2010) “Failure to Launch” [Online] Available at:http://www.smh.com.au/digital-life/digital-life-news/failure-to-launch-20100120-mk8g.html[Accessed on: 12-04-2011].6. Preece Robbers, (2002), “Interaction Design: Beyond Human-Computer Interaction”[Online] Available at: http://oro.open.ac.uk/5250/ [Accessed on: 15-04-2011].7. Ben Shneiderman, (2010), “Designing the User Interface: Strategies for EffectiveHuman-Computer Interaction” [Online] Available at: http://www.amazon.com/Designing-User-Interface-Human-Computer-Interaction/dp/0321197860 [Accessed on: 20-04-2011].8. Baldiris ET. Al. (2007), “Towards User modelling and Adaptive System for All”,[Online] Available at: http://labs-repos.iit.demokritos.gr/conferences/UM2007/UM2007_WS5_TUMAS.pdfAccessed on: 25-04-2011].9. Webmaster, (2007), “Fridge of the future” [Online] Available at:http://uk.danfossuniverse.com/page2076.aspx [Accessed on: 25-04-2011].Bibliography1. Peerce Rogers, Interaction Design, John Wiley & Sons 2002.2. Christine Faulker, Essence of Human Computer Interaction, prentice hall 1998.3. Alan Dix, Janet Finlay, Human Computer Interaction 3rdEd. , Prentice Hall, 2004.4. P.Johnson, Human Computer Interaction, McGraw-Hill, 1992.5. Ben Shneiderman, Designing the User Interface: Strategies for Effective Human-Computer Interaction, 5thed., Pearson 2005.6. Jens Rasmussen, Henning B. Andersen, Niels Ole Bernsen, Human ComputerInteraction: Research Directions in Cognitive Science, Vol.3, USA: IEA 2 1991.7. Linda Macaulay, Human Computer Interaction for Software Designers, UK: InternationalThomson Computer Press 1995.8. M.Harrison & H. Thimbleby, Formal Methods in Human Computer Interaction , UK:Cambridge University Press 1990.

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