WATN

Where Are They Now A new model for sharing location info Dmitry Namiot dnamiot@gmail.com Lomonosov Moscow State University Moscow 2011

Introduction
This paper describes a new model for sharing location information on mobile phones.
Safe model for sharing – there is no third party server that keeps your ID and your data
Mobile web application (HTML5)
http://watn.linkstore.ru

Key moments
No sign-in
Peer to peer sharing
Separation for location data and users data
Any personal information is local only

How does it work
Step by step slides
Step 1: run the application
http://watn.linkstore.ru
Any HTML5 browser: iPhone, Android, Bada etc.

Start
Application assigns (once) some unique ID for the each user
Just an ID (UUID) - no secret codes
Any time you can erase data associated with this ID and create a new one

Available options

Share location info

Sharing process

Sharing data
Sharing location info starts with sharing your ID
Shared via messages (email, SMS)
The target party can see context: SMS phone number or From field in email
So the target party is aware who is behind the shared ID

Sharing request

Mutual friends
Based on IDs we can detect mutual friends
But we can not set mutual friendship automatically
We (WANT) are unaware about the originator of request

IDs
Accept sharing request
Assign name (nick) for ID from incoming request
It is based on the context (‘from’) for message with the “share location” request
Name (nick) will be stored locally
localStorage in HTML5
It is like distributed database: names (nicks) are local, social graph (who shares location to whom) is global

Social graph
Now we can obtain our social graph from the server
A set of pairs (ID1, ID2)
We can match IDs against the local database with nicks (names)
After that we can display data in natural forms (with names versus IDs

Social graph

Your own sharing

Messages

Conclusion
A new model for sharing location info
There is no 3-rd party server (as in social networks, Google Latitude etc) with your ID and your location
Only anonymous server side data
Personal info is local only
Platform agnostic (HTML5)

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WATN

by Coldbeans Software on Oct 21, 2011

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