SlideShare a Scribd company logo

Hedgehog-hotmobile2023-flores.pdf

Hedgehog presentation in HotMobile 2023

1 of 17
Download to read offline
Hedgehog: Detecting Drink Spiking
on Wearables
Zhigang Yin, Mohan Liyanage,
Agustin Zuniga, Petteri Nurmi, Huber Flores
HotMobile 2023
1
February 22–23, 2023, Newport Beach, CA, USA
Importance
• Drink spiking is a critical social issue to overcome as it can cause
victims severe danger, anxiety, and physical or mental harm
 memory loss
 brain activity slowness
 concentration difficulty
 light-headedness
 blurred vision
 loss of balance
 nausea and vomiting
 speech difficulty
2
Preventing drink spiking with drugs is vital
State-of-the-art solutions
• Keeping an eye watch (1) and other methods are limited to drink
spiking in a social context.
3
(2) Specialized utensils
that change color
How to detect drink spiking
unobtrusively in social
contexts?
Source: https://www.anton-paar.com/us-
en/products/group/beverage-analysis/
(3) Sophisticated
equipment
Source: Ranasinghe, Nimesha, et al. "Taste+ digitally enhancing taste
sensations of food and beverages." Proceedings of the 22nd ACM
international conference on Multimedia. 2014.
Drawback:
(1): Challenging due to
spiking not visible or
crowded occasions
(2-3): Obtrusive in
social activities and
difficult to deploy
Hedgehog: Contributions
• New system: We present Hedgehog, a pervasive sensing
approach that re-purposes the optical sensors in off-the-shelf
wearables to identify spiked drinks.
• New insights: We demonstrate that Hedgehog can detect drink
spiking accurately under different conditions.
4
Hedgehog: Overview
5
Characterization of drinks with light
(a) Hedgehog design
(b) Light reflectivity pattern
(c) Location(s) for sampling
(d) Sampling through a transparent surface
(e) Sensing pipeline for analysis of collected samples
Hedgehog: Evaluation and Results
6

Recommended

determine the contains of cold drincks
determine the contains of cold drincksdetermine the contains of cold drincks
determine the contains of cold drincksVrushabh Tokse
 
Identification and Recognition of Snack Foods from Cluttered Scene for Dietar...
Identification and Recognition of Snack Foods from Cluttered Scene for Dietar...Identification and Recognition of Snack Foods from Cluttered Scene for Dietar...
Identification and Recognition of Snack Foods from Cluttered Scene for Dietar...IJCSIS Research Publications
 
Final seminar
Final seminarFinal seminar
Final seminarbbi08maji
 
Visual Search Experiment
Visual Search ExperimentVisual Search Experiment
Visual Search ExperimentConnie Johnson
 
water conservation by different methodss
water conservation by different methodsswater conservation by different methodss
water conservation by different methodssOmkarSwami34
 
Exhibition "Innovative technologies"
Exhibition "Innovative technologies"Exhibition "Innovative technologies"
Exhibition "Innovative technologies"Aleksandar Kostov
 
Assessment of the Coliform Bacterial Load of Some Drinking Water Sources in D...
Assessment of the Coliform Bacterial Load of Some Drinking Water Sources in D...Assessment of the Coliform Bacterial Load of Some Drinking Water Sources in D...
Assessment of the Coliform Bacterial Load of Some Drinking Water Sources in D...Scientific Review SR
 
Cognitive Rehabilitation through Serious Games
Cognitive Rehabilitation through Serious GamesCognitive Rehabilitation through Serious Games
Cognitive Rehabilitation through Serious GamesEloisa Vargiu
 

More Related Content

Similar to Hedgehog-hotmobile2023-flores.pdf

Eye Tracking - FEK marketing experiment
Eye Tracking - FEK marketing experimentEye Tracking - FEK marketing experiment
Eye Tracking - FEK marketing experimentHugo Guyader
 
Immersive room survey agroparistech reperes (march 2017)
Immersive room survey agroparistech reperes (march 2017)Immersive room survey agroparistech reperes (march 2017)
Immersive room survey agroparistech reperes (march 2017)François Abiven
 
Nirmal Herath - SOREN
Nirmal Herath - SORENNirmal Herath - SOREN
Nirmal Herath - SORENNirmal Herath
 
B sc biotech i bpi unit 3 p h meter and colorimeter
B sc biotech i bpi unit 3 p h meter and colorimeterB sc biotech i bpi unit 3 p h meter and colorimeter
B sc biotech i bpi unit 3 p h meter and colorimeterRai University
 
Lab summaries complete
Lab summaries completeLab summaries complete
Lab summaries completeanaelishockey
 

Similar to Hedgehog-hotmobile2023-flores.pdf (6)

Eye Tracking - FEK marketing experiment
Eye Tracking - FEK marketing experimentEye Tracking - FEK marketing experiment
Eye Tracking - FEK marketing experiment
 
Immersive room survey agroparistech reperes (march 2017)
Immersive room survey agroparistech reperes (march 2017)Immersive room survey agroparistech reperes (march 2017)
Immersive room survey agroparistech reperes (march 2017)
 
Nirmal Herath - SOREN
Nirmal Herath - SORENNirmal Herath - SOREN
Nirmal Herath - SOREN
 
Water treatment no dirt, no germs
Water treatment no dirt, no germsWater treatment no dirt, no germs
Water treatment no dirt, no germs
 
B sc biotech i bpi unit 3 p h meter and colorimeter
B sc biotech i bpi unit 3 p h meter and colorimeterB sc biotech i bpi unit 3 p h meter and colorimeter
B sc biotech i bpi unit 3 p h meter and colorimeter
 
Lab summaries complete
Lab summaries completeLab summaries complete
Lab summaries complete
 

More from Huber Flores

One-to-rule-them-all_BigData2023_Ottun.pdf
One-to-rule-them-all_BigData2023_Ottun.pdfOne-to-rule-them-all_BigData2023_Ottun.pdf
One-to-rule-them-all_BigData2023_Ottun.pdfHuber Flores
 
foggy_sensys2023_dar.pdf
foggy_sensys2023_dar.pdffoggy_sensys2023_dar.pdf
foggy_sensys2023_dar.pdfHuber Flores
 
IoT_nanodrones_mayowa.pdf
IoT_nanodrones_mayowa.pdfIoT_nanodrones_mayowa.pdf
IoT_nanodrones_mayowa.pdfHuber Flores
 
DataScienceSeminar_Sustainability_Flores.pdf
DataScienceSeminar_Sustainability_Flores.pdfDataScienceSeminar_Sustainability_Flores.pdf
DataScienceSeminar_Sustainability_Flores.pdfHuber Flores
 
UbiComp_LostInPerformance2023-Flores.pdf
UbiComp_LostInPerformance2023-Flores.pdfUbiComp_LostInPerformance2023-Flores.pdf
UbiComp_LostInPerformance2023-Flores.pdfHuber Flores
 
Ubicomp_HIPPO-Zhigang.pdf
Ubicomp_HIPPO-Zhigang.pdfUbicomp_HIPPO-Zhigang.pdf
Ubicomp_HIPPO-Zhigang.pdfHuber Flores
 
DPS-Tartu-ResearchAgenda2023-huberflores.pdf
DPS-Tartu-ResearchAgenda2023-huberflores.pdfDPS-Tartu-ResearchAgenda2023-huberflores.pdf
DPS-Tartu-ResearchAgenda2023-huberflores.pdfHuber Flores
 
Mega-enviromental_Flores.pdf
Mega-enviromental_Flores.pdfMega-enviromental_Flores.pdf
Mega-enviromental_Flores.pdfHuber Flores
 
Collaborative Software Development
Collaborative Software DevelopmentCollaborative Software Development
Collaborative Software DevelopmentHuber Flores
 
Evidence-aware Mobile Computational Offloading
Evidence-aware Mobile Computational OffloadingEvidence-aware Mobile Computational Offloading
Evidence-aware Mobile Computational OffloadingHuber Flores
 
Modeling Mobile Code Acceleration in the Cloud
Modeling Mobile Code Acceleration in the CloudModeling Mobile Code Acceleration in the Cloud
Modeling Mobile Code Acceleration in the CloudHuber Flores
 
Cloud-based Mobile Networking Seminar
Cloud-based Mobile Networking SeminarCloud-based Mobile Networking Seminar
Cloud-based Mobile Networking SeminarHuber Flores
 
Mobile Code Offloading from Concept to Practice, and Beyond
Mobile Code Offloading from Concept to Practice, and BeyondMobile Code Offloading from Concept to Practice, and Beyond
Mobile Code Offloading from Concept to Practice, and BeyondHuber Flores
 
A Generic Middleware Framework for Handling Process Intensive Hybrid Cloud ...
A Generic Middleware Framework  for Handling Process Intensive Hybrid  Cloud ...A Generic Middleware Framework  for Handling Process Intensive Hybrid  Cloud ...
A Generic Middleware Framework for Handling Process Intensive Hybrid Cloud ...Huber Flores
 
Adaptive Code Offloading for Mobile Cloud Applications
Adaptive Code Offloading for Mobile Cloud ApplicationsAdaptive Code Offloading for Mobile Cloud Applications
Adaptive Code Offloading for Mobile Cloud Applications Huber Flores
 

More from Huber Flores (15)

One-to-rule-them-all_BigData2023_Ottun.pdf
One-to-rule-them-all_BigData2023_Ottun.pdfOne-to-rule-them-all_BigData2023_Ottun.pdf
One-to-rule-them-all_BigData2023_Ottun.pdf
 
foggy_sensys2023_dar.pdf
foggy_sensys2023_dar.pdffoggy_sensys2023_dar.pdf
foggy_sensys2023_dar.pdf
 
IoT_nanodrones_mayowa.pdf
IoT_nanodrones_mayowa.pdfIoT_nanodrones_mayowa.pdf
IoT_nanodrones_mayowa.pdf
 
DataScienceSeminar_Sustainability_Flores.pdf
DataScienceSeminar_Sustainability_Flores.pdfDataScienceSeminar_Sustainability_Flores.pdf
DataScienceSeminar_Sustainability_Flores.pdf
 
UbiComp_LostInPerformance2023-Flores.pdf
UbiComp_LostInPerformance2023-Flores.pdfUbiComp_LostInPerformance2023-Flores.pdf
UbiComp_LostInPerformance2023-Flores.pdf
 
Ubicomp_HIPPO-Zhigang.pdf
Ubicomp_HIPPO-Zhigang.pdfUbicomp_HIPPO-Zhigang.pdf
Ubicomp_HIPPO-Zhigang.pdf
 
DPS-Tartu-ResearchAgenda2023-huberflores.pdf
DPS-Tartu-ResearchAgenda2023-huberflores.pdfDPS-Tartu-ResearchAgenda2023-huberflores.pdf
DPS-Tartu-ResearchAgenda2023-huberflores.pdf
 
Mega-enviromental_Flores.pdf
Mega-enviromental_Flores.pdfMega-enviromental_Flores.pdf
Mega-enviromental_Flores.pdf
 
Collaborative Software Development
Collaborative Software DevelopmentCollaborative Software Development
Collaborative Software Development
 
Evidence-aware Mobile Computational Offloading
Evidence-aware Mobile Computational OffloadingEvidence-aware Mobile Computational Offloading
Evidence-aware Mobile Computational Offloading
 
Modeling Mobile Code Acceleration in the Cloud
Modeling Mobile Code Acceleration in the CloudModeling Mobile Code Acceleration in the Cloud
Modeling Mobile Code Acceleration in the Cloud
 
Cloud-based Mobile Networking Seminar
Cloud-based Mobile Networking SeminarCloud-based Mobile Networking Seminar
Cloud-based Mobile Networking Seminar
 
Mobile Code Offloading from Concept to Practice, and Beyond
Mobile Code Offloading from Concept to Practice, and BeyondMobile Code Offloading from Concept to Practice, and Beyond
Mobile Code Offloading from Concept to Practice, and Beyond
 
A Generic Middleware Framework for Handling Process Intensive Hybrid Cloud ...
A Generic Middleware Framework  for Handling Process Intensive Hybrid  Cloud ...A Generic Middleware Framework  for Handling Process Intensive Hybrid  Cloud ...
A Generic Middleware Framework for Handling Process Intensive Hybrid Cloud ...
 
Adaptive Code Offloading for Mobile Cloud Applications
Adaptive Code Offloading for Mobile Cloud ApplicationsAdaptive Code Offloading for Mobile Cloud Applications
Adaptive Code Offloading for Mobile Cloud Applications
 

Recently uploaded

dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...
dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...
dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...dkNET
 
ELK ELISA Kits Manufacturer in Singapore
ELK ELISA Kits Manufacturer in SingaporeELK ELISA Kits Manufacturer in Singapore
ELK ELISA Kits Manufacturer in SingaporeGaia Science Pte Ltd
 
Quasar and Microquasar Series - Microquasars in our Galaxy
Quasar and Microquasar Series - Microquasars in our GalaxyQuasar and Microquasar Series - Microquasars in our Galaxy
Quasar and Microquasar Series - Microquasars in our GalaxySérgio Sacani
 
LIGHT Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...
LIGHT  Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...LIGHT  Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...
LIGHT Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...Abhinav S
 
Earth and Planetary Science | Volume 01 | Issue 01 | April 2022
Earth and Planetary Science | Volume 01 | Issue 01 | April 2022Earth and Planetary Science | Volume 01 | Issue 01 | April 2022
Earth and Planetary Science | Volume 01 | Issue 01 | April 2022Nan Yang Academy of Sciences
 
Planeta 9 - A Pan-STARRS1 Search for Planet Nine
Planeta 9 - A Pan-STARRS1 Search for Planet NinePlaneta 9 - A Pan-STARRS1 Search for Planet Nine
Planeta 9 - A Pan-STARRS1 Search for Planet NineSérgio Sacani
 
Duchenne Muscular Dystrophy or DMD .pptx
Duchenne Muscular Dystrophy or DMD .pptxDuchenne Muscular Dystrophy or DMD .pptx
Duchenne Muscular Dystrophy or DMD .pptxNavanidhan.M
 
A galactic microquasar mimicking winged radio galaxies
A galactic microquasar mimicking winged radio galaxiesA galactic microquasar mimicking winged radio galaxies
A galactic microquasar mimicking winged radio galaxiesSérgio Sacani
 
Hypertension in Children and Adolescents
Hypertension in Children and AdolescentsHypertension in Children and Adolescents
Hypertension in Children and AdolescentsTristanBabaylan1
 
ROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsx
ROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsxROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsx
ROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsxAnkitChoudhary955647
 
Hydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oil
Hydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oilHydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oil
Hydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oilZeeshan Nazir
 
CW 2 - Frustrated Lewis Pair - Molly winterbottom.pdf
CW 2 - Frustrated Lewis Pair - Molly winterbottom.pdfCW 2 - Frustrated Lewis Pair - Molly winterbottom.pdf
CW 2 - Frustrated Lewis Pair - Molly winterbottom.pdfMollyWinterbottom
 
Analytical Coursework - Molly Winterbottom.pdf
Analytical Coursework - Molly Winterbottom.pdfAnalytical Coursework - Molly Winterbottom.pdf
Analytical Coursework - Molly Winterbottom.pdfMollyWinterbottom
 
Quality safety and legislations of cosmetics.pptx
Quality safety and legislations of cosmetics.pptxQuality safety and legislations of cosmetics.pptx
Quality safety and legislations of cosmetics.pptxDeviSky1
 
REARING EQUIPMENT IN SERICULTURE . pptx
REARING EQUIPMENT IN SERICULTURE . pptxREARING EQUIPMENT IN SERICULTURE . pptx
REARING EQUIPMENT IN SERICULTURE . pptxVISHALI SELVAM
 
2024 Insilicogen Company English Brochure
2024 Insilicogen Company English Brochure2024 Insilicogen Company English Brochure
2024 Insilicogen Company English BrochureInsilico Gen
 
Kavita Punekar: Illuminating Minds and Igniting Passion in Science Education
Kavita Punekar: Illuminating Minds and Igniting Passion in Science EducationKavita Punekar: Illuminating Minds and Igniting Passion in Science Education
Kavita Punekar: Illuminating Minds and Igniting Passion in Science Educationdsnow9802
 
FINAL Shehnaz and Thane Interview PowerPoint ;-).pdf
FINAL Shehnaz and Thane Interview PowerPoint ;-).pdfFINAL Shehnaz and Thane Interview PowerPoint ;-).pdf
FINAL Shehnaz and Thane Interview PowerPoint ;-).pdfThane Heins
 
Open Access Publishing in Astrophysics and the Open Journal of Astrophysics
Open Access Publishing in Astrophysics and the Open Journal of AstrophysicsOpen Access Publishing in Astrophysics and the Open Journal of Astrophysics
Open Access Publishing in Astrophysics and the Open Journal of AstrophysicsPeter Coles
 

Recently uploaded (20)

INTRODUCTION TO PLANT TAXONOMY WITH DIVERSE TAXONOMIC APPROACHES
INTRODUCTION TO PLANT TAXONOMY WITH DIVERSE TAXONOMIC APPROACHESINTRODUCTION TO PLANT TAXONOMY WITH DIVERSE TAXONOMIC APPROACHES
INTRODUCTION TO PLANT TAXONOMY WITH DIVERSE TAXONOMIC APPROACHES
 
dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...
dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...
dkNET Webinar: An Encyclopedia of the Adipose Tissue Secretome to Identify Me...
 
ELK ELISA Kits Manufacturer in Singapore
ELK ELISA Kits Manufacturer in SingaporeELK ELISA Kits Manufacturer in Singapore
ELK ELISA Kits Manufacturer in Singapore
 
Quasar and Microquasar Series - Microquasars in our Galaxy
Quasar and Microquasar Series - Microquasars in our GalaxyQuasar and Microquasar Series - Microquasars in our Galaxy
Quasar and Microquasar Series - Microquasars in our Galaxy
 
LIGHT Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...
LIGHT  Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...LIGHT  Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...
LIGHT Community Medicine LIGHT IS A SOURCE OF ENERGY THERE ARE TWO TYPE OF S...
 
Earth and Planetary Science | Volume 01 | Issue 01 | April 2022
Earth and Planetary Science | Volume 01 | Issue 01 | April 2022Earth and Planetary Science | Volume 01 | Issue 01 | April 2022
Earth and Planetary Science | Volume 01 | Issue 01 | April 2022
 
Planeta 9 - A Pan-STARRS1 Search for Planet Nine
Planeta 9 - A Pan-STARRS1 Search for Planet NinePlaneta 9 - A Pan-STARRS1 Search for Planet Nine
Planeta 9 - A Pan-STARRS1 Search for Planet Nine
 
Duchenne Muscular Dystrophy or DMD .pptx
Duchenne Muscular Dystrophy or DMD .pptxDuchenne Muscular Dystrophy or DMD .pptx
Duchenne Muscular Dystrophy or DMD .pptx
 
A galactic microquasar mimicking winged radio galaxies
A galactic microquasar mimicking winged radio galaxiesA galactic microquasar mimicking winged radio galaxies
A galactic microquasar mimicking winged radio galaxies
 
Hypertension in Children and Adolescents
Hypertension in Children and AdolescentsHypertension in Children and Adolescents
Hypertension in Children and Adolescents
 
ROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsx
ROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsxROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsx
ROLES OF MICROBES IN BIOCONTROL BY ANKIT CHOUDHARY.ppsx
 
Hydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oil
Hydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oilHydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oil
Hydro-Thermal Liquefaction Of Lignocellulosic biomass to produce Bio-Crude oil
 
CW 2 - Frustrated Lewis Pair - Molly winterbottom.pdf
CW 2 - Frustrated Lewis Pair - Molly winterbottom.pdfCW 2 - Frustrated Lewis Pair - Molly winterbottom.pdf
CW 2 - Frustrated Lewis Pair - Molly winterbottom.pdf
 
Analytical Coursework - Molly Winterbottom.pdf
Analytical Coursework - Molly Winterbottom.pdfAnalytical Coursework - Molly Winterbottom.pdf
Analytical Coursework - Molly Winterbottom.pdf
 
Quality safety and legislations of cosmetics.pptx
Quality safety and legislations of cosmetics.pptxQuality safety and legislations of cosmetics.pptx
Quality safety and legislations of cosmetics.pptx
 
REARING EQUIPMENT IN SERICULTURE . pptx
REARING EQUIPMENT IN SERICULTURE . pptxREARING EQUIPMENT IN SERICULTURE . pptx
REARING EQUIPMENT IN SERICULTURE . pptx
 
2024 Insilicogen Company English Brochure
2024 Insilicogen Company English Brochure2024 Insilicogen Company English Brochure
2024 Insilicogen Company English Brochure
 
Kavita Punekar: Illuminating Minds and Igniting Passion in Science Education
Kavita Punekar: Illuminating Minds and Igniting Passion in Science EducationKavita Punekar: Illuminating Minds and Igniting Passion in Science Education
Kavita Punekar: Illuminating Minds and Igniting Passion in Science Education
 
FINAL Shehnaz and Thane Interview PowerPoint ;-).pdf
FINAL Shehnaz and Thane Interview PowerPoint ;-).pdfFINAL Shehnaz and Thane Interview PowerPoint ;-).pdf
FINAL Shehnaz and Thane Interview PowerPoint ;-).pdf
 
Open Access Publishing in Astrophysics and the Open Journal of Astrophysics
Open Access Publishing in Astrophysics and the Open Journal of AstrophysicsOpen Access Publishing in Astrophysics and the Open Journal of Astrophysics
Open Access Publishing in Astrophysics and the Open Journal of Astrophysics
 

Hedgehog-hotmobile2023-flores.pdf

  • 1. Hedgehog: Detecting Drink Spiking on Wearables Zhigang Yin, Mohan Liyanage, Agustin Zuniga, Petteri Nurmi, Huber Flores HotMobile 2023 1 February 22–23, 2023, Newport Beach, CA, USA
  • 2. Importance • Drink spiking is a critical social issue to overcome as it can cause victims severe danger, anxiety, and physical or mental harm  memory loss  brain activity slowness  concentration difficulty  light-headedness  blurred vision  loss of balance  nausea and vomiting  speech difficulty 2 Preventing drink spiking with drugs is vital
  • 3. State-of-the-art solutions • Keeping an eye watch (1) and other methods are limited to drink spiking in a social context. 3 (2) Specialized utensils that change color How to detect drink spiking unobtrusively in social contexts? Source: https://www.anton-paar.com/us- en/products/group/beverage-analysis/ (3) Sophisticated equipment Source: Ranasinghe, Nimesha, et al. "Taste+ digitally enhancing taste sensations of food and beverages." Proceedings of the 22nd ACM international conference on Multimedia. 2014. Drawback: (1): Challenging due to spiking not visible or crowded occasions (2-3): Obtrusive in social activities and difficult to deploy
  • 4. Hedgehog: Contributions • New system: We present Hedgehog, a pervasive sensing approach that re-purposes the optical sensors in off-the-shelf wearables to identify spiked drinks. • New insights: We demonstrate that Hedgehog can detect drink spiking accurately under different conditions. 4
  • 5. Hedgehog: Overview 5 Characterization of drinks with light (a) Hedgehog design (b) Light reflectivity pattern (c) Location(s) for sampling (d) Sampling through a transparent surface (e) Sensing pipeline for analysis of collected samples
  • 7. Hedgehog: Testbed Figure 2: (a) Smart ring prototype from different angles; (b)(1)Drink characterization; (b)(2) Drink spiking with common pills; (c) Milk drink with aggregated compound mixture; (d) Drink spiking with soluble pills.
  • 8. Hedgehog: Evaluation (1) Result: Hedgehog can characterize different drinks in different positions. 8 (a) Little finger (b) Middle finger (c) Index finger
  • 9. Hedgehog: Evaluation (2) Result: Hedgehog is capable of detecting changes in drink characteristics 9 (a) Little finger (b) Middle finger (c) Index finger Milk mixed with powder.
  • 10. Hedgehog: Evaluation (3) Result: Hedgehog can detect drink spiking accurately 10 Water spiked by different pills Classification performance: Little finger (position-1): 48.64% , Middle finger (position-2): 89.71%, Index finger (position-3): 82.24% Middle finger achieves the best
  • 11. Hedgehog: Evaluation (4) Result: Unattended drinks need measurements from multiple contact points, or they need to be shaken to monitor whether they are spiked or not. 11 Spiked drink (Position-2 sensor only). S: Spiked, SN: Spiked-nomotion (for an hour), SS: Spiked-shaken (after an hour)
  • 12. Hedgehog: Practicability (1) Result: Hedgehog can detect drink spiking accurately under different conditions: IAL-indoor ambient light, OAL-outdoor ambient light 12 (a) Light beer: IAL (b) Light beer: Dark (c) Light beer: OAL (d) Dark beer: IAL (e) Dark beer: Dark (f) Dark beer: OAL
  • 13. Hedgehog: Practicability (2) Result: Hedgehog can detect drink spiking accurately under different conditions: IAL-indoor ambient light, OAL-outdoor ambient light 13 Drink spiking classification performance(%). Features: light reflectivity value (L), glass cup type (C), beer type (B) and light intensity LUX (U).
  • 14. Hedgehog: Ongoing work • Other cases  Participatory crowdsensing  Ambient environment frequently changes and hand changes  Generalization to support any drink type and concentration of liquids • Theoretical modeling  Modeling (spiking) refraction in liquids (particles sinking from top to bottom) 14
  • 15. • New system: We present Hedgehog, a pervasive sensing approach that re-purposes the optical sensors in off-the-shelf wearables to identify spiked drink • New insights: We demonstrate that Hedgehog can detect drink spiking accurately under different conditions. 15 Summary and conclusions
  • 16. Acknowledgement This research has been financed by European Social Fund via “ICT programme” measure, the Academy of Finland project 339614, and the Nokia Foundation grant 20220138. This presentation has been supported by the University of Tartu ASTRA Project PER ASPERA (European Regional Development Fund). 16
  • 17. Questions? Thank you! (Do not hesitate to reach us via e-mail) Mohan Liyanage (mohan.liyanage@ut.ee) Zhigang Yin (zhigang.yin@ut.ee) Agustin Zuniga (agustin.zuniga@helsinki.fi) Petteri Nurmi (petteri.nurmi@helsinki.fi) Huber Flores (huber.flores@ut.ee) 17 ACM library link: https://dl.acm.org/doi/10.1145/3572864.3580336