Users and Geo

Users and geo R a f f i K r i k o r i a n @ r a f f i

Talk ing about user s and geo with@t hinkvitamin in t he GeolocationOnlin e Conference!13 Jan via Twitter for iPhone from Twitter Headquarters 795 Folsom Street San Francisco, CA View Tweets at this place

Who am I?Engineering Manager of the Twitter Platform Services teamBuilt the original geo services on the @twitterapi Coordinate support for Tweets Built initial implementation of Rockdove at Twitter - our locations database

What are we going to talk about?Take a look at some geo enabled applicationsTry to understand the implicit “here”What is location privacy? How does sharing work?What are some opportunities in the geo space?

What are we going to talk about?Take a look at some geo enabled applicationsTry to understand the implicit “here”What is location privacy? How does sharing work?What are some opportunities in the geo space? PLEASE INTERRUPT ME WITH QUESTIONS!!!!

People want to talkabout where they are

People want todiscover what’s around them

Location is...

Location is context and Relevancy

Location is globally applicable, but locally relevant

Walking down memory lane

Active Badge (1989-1992)Way to locate people within abuildingTransmits a unique code every 10secondsBuilding sensors can then pick uppeople and allow other applicationsto be built on top of it

Dodgeball (2000-2005-2009)Users use SMS to indicate location(pre-cursor to “check-in”)Dodgeball would notify of crushesand friends who were nearbyClosed in February of 2009 butideas clearly live on in GoogleLatitude

PacManhattan (2004)Urban game recreating Pac-man inNYC by NYU ITP studentsPlayer dressed as Pac-man wouldrun around Washington SquarePark collecting dots while Ghoststried to catch him/herUsed cell phone contact tocontrollers back at NYU

Serendipity (2004)Centralized server stores proﬁlesMobile phones broadcastBlueTooth IDs nearby phones query the server for the IDs they receive server does a proﬁle matchUsed to augment physical reality

Loopt (2005-)GPS sharing system to see whereyour friends/contacts areBackground application thatupdates locationHas the ability to turn location onand off on a friend by friend basisHas social aspects of seeing andmessaging friends; Loopt Mix formore non-friend social networking

Flickr Geo Tagging (2006-)Adding contextLocation is a “ﬁrst class” object, butnot the pointOn modern devices, this can beautomatic; provides functionality soitems can be dragged and dropped

Brightkite (2007-)First mass usage of “check in”Based on check-in, who is nearby,who has been someplace before,posted notes and photoscheck.in was Brightkite’s attempt ata “universal check in” service

Foursquare (2009-)Real popular-ization of “check in”due to embedded game dynamics -made LBS funGame dynamics cause people tochange their behaviorReal business awareness with deals,tips, and rewards for mayorship

Search with my Location (2009-)Location is just contextTurn on location for Mobile Safariin iOS on www.google.com, andsearch results are re-ranked usingthat context

Facebook Places (2010-)“Check-in” becomes a verb inFacebookMost notable because of juggernautwhich is FacebookFacebook Deals is a loyalty cardmechanism built upon Places

Location in the @twitterapi user object1st attempt at geo on the { ...@twitterapi "display_url":null, "profile_text_color":"333333", "followers_count":5997,Expose a text ﬁeld in the user "expanded_url":null,object called “location” "is_translator":false, "following":false, "verified":false, "profile_sidebar_fill_color":"DDEEF6",Free form text "location":"San Francisco, California", "profile_background_tile":false, "time_zone":"Pacific Time (US & Canada)",If geo-codeable, then include it in ...search }

@twitterapi’s Geotagging APIAttach coordinates to a TweetExpose the “point” in timelinesAllow radius searches

@twitterapi’s Geoplace APIAttach a named place to a TweetHave entire model for how toexpose and describe a placeRicher data for users

Location is about context

Location is really dangerous

Location is really dangerousContext can be hard to infer - mistaken assumptions can bedangerous and problematicWho is storing the data? How is the history managed? Who has control over the data? How is that data shared?Is the application provider a subpoena target?

A lot of data already out thereClipper card (transit card for subway system)FastPass (electronic toll pass device)Cellphone dataGoogle searches made from my phone

What makes a place?

37o46’56.5”N,122o24’1.7”W

37o46’56.5”N, 122o24’1.7”W

37.78215,-122.40040 != 37.78,-122.40

Dropping precision

“SoMA”

Roma or Rome / or Tokyo

5a110d312052166f or 2487956

Sharing Location

Understanding the user’s “intent”Why are we sharing the location?Are we trying to actually share current / real location?Rarely (but there are examples) do people share location forlocation’s sake

Public modelsComplete publication oflocational informationControlled “fuzziness” ofshared data

Private/Public modelsFoursquare / Gowalla / etc. have public privatemodelsPublic - ability to shout out and TweetPrivate - ability to just share with mutualconﬁrmed friends

Temporary sharesGranting access to accountNo concerns about user“forgetting” who has accessto this data

Who/What has the ability to share your location?What applications can share your location?You may be extremely careful, but are the people you are withcareful?A user’s locational privacy may not be in control of that user

What do your users want to do?

What do your users want to do?You have to evaluate this for yourself, obviouslyTrends towards location as a pervasive context / ﬁnd cool things near by / alerts need more location contextual data out there to do this more attempts to crack the mythical “social networking” one data mining

Twitter Local TrendsDiscovery of local conversationsUse a multitude of signals to bucketcontent

SVNGREven more game dynamics than FoursquareBetter incentive for businesses - moving towardsmore of an engagement and broadcast model

GrouponFinding deals near byGreat example of “location as a substrate” or“location as context”Both web and native mobile applications are geo-location enabled

Yelp’s Monocle“Augmented reality” to search the worldnearbyInterface is clearly problematic, and isunclear why it beneﬁts users - but theconcepts are intriguing

@emergency_in_sf“Follow some of the larger emergencies inSan Francisco as they happen!”Could be seriously enhanced to only dodelivery to those people who are actuallyaffected (or are strangely interested inemergencies)

Questions? Follow me! twitter.com/rafﬁ

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Users and Geo

by Raffi Krikorian

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Users and Geo

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