musubi: a decentralized mobile social web
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Musubi: a Decentralized Mobile Social Web
Monica Lam MobiSocial Computing Laboratory, Stanford University
With Dan Boneh, Ben Dodson, Michael Fischer, Sudheendra Hangal, Abhinay Nagpal, T. J. Purtell, Ian Vo
MobiSocial Lab Affiliates: AVG, Google, ING Direct, Nokia, Sony Ericsson.
Part of the NSF Programmable Open Mobile Internet (POMI) 2020 project.
My Trip to Crete
Christos Kozyrakis
Nicolas Kokkalis
Manolis Katevenis
Social App Platform
FB Android SDK
900 Million Users
Facebook Graph
“Every smile you make,
Every ‘like’ you click,
I’ll be watching you. ”
Big Data
So you never have to search again!
- Big Data Engineer
12 weeks unscented lotion 20 weeks supplements (calcium, magnesium, zinc) 36 weeks scent-free soap, cotton balls, hand sanitizers, washcloths
Big Data
1. Control over our data?
2. What to do with our distributed data?
and Alternatives?
Part 1. Control over our data
Today’s Social Intranets
Loss of control of personal data
Loss of freedom: Intermediated social interactions Not suitable for all apps:
health, finance, corporate, educational
Proprietary social graph
Emergence of a monopoly Loss of competition and innovation
Vision: Social Intranet -> Internet
No single owner
of users’ data or app platform
No need to join the same network
PrPl: Federated Semantic Web, 2008
Friend’s
Butlers
Friend’s
Butlers
Friends’
Butlers
Personal-Cloud Butler
Semantic
Index
OpenID
Manager Data
Manager
Access
Control
Database Query Language
Drop
Box Facebook
home
server Google+
Lessons Powerful architecture
Users don’t want ownership
Users want new features
Users want ease of use
Software is too large, too flaky
Decision
2010: PrPl shelved
2010 Mar: Diaspora project proposed
2012 Mar: Estimated to have 377,538 users
A Federated Social Web
Musubi
Mobile social app platform
Best, new, mobile experience
Common interface to a choice of
Cloud hosting services
• Dropbox
• Google Drive / Google Plus
MuSUBI:
Mobile
Social
UBIquitous
Dodson et al. WWW 2012 Best Student Paper Finalist
Today’s Social Networking
Global Social Graph
TCP/IP
ESP: Secure, disintermediated comm
Egocentric Social Platform (ESP)
Encrypted messages based on Identity-Based Cryptography
IBE: Identity Based Cryptography
Address book based
User contact must be accepted into the address book to display messages
Automatic revocation
Eliminate trust of IBD: thresholding ownership of master keys
public
parameters
Social App Platform
Global Social Graph
FB app TCP/IP
Social Kit for Mobile Apps
Egocentric Social Platform
Social Feeds
Best Mobile Experience
Social Internet: interact with all my friends
Google Plus
Phone book
Email accounts
Stanford
Contacts are not uploaded to a 3rd party
Cross-Device Multimedia Group Chat
Status
Pictures
Voice
Links
GPS locations
Information shared only between friends, P2P
Extensible with Social Apps!!
Photo
Editor
Browser Scrabble
Poker
ToDo List
White Board
Videos
Making existing apps social
P2P collaborating, sharing data
Identity Firewall: Social with no data leak
Encrypted Messaging
Testing it in the field ...
30 10-12 year olds like it.
Dogfooding in trip to WWW in Lyon
Monica: Bonjour Paris
TJ: Bonjour madame
Real-time Group Chat w Apps
Shared semantic index
who, what, where, when, how,
access control, notification of new content
Sent 461 messages, <10% worth keeping
Sharing ephemeral data first
Persistent store as backup
Scalability for billions of phones
PrPl: Federated Semantic Web
Friend’s
Butlers
Friend’s
Butlers
Friends’
Butlers
Personal-Cloud Butler
Semantic
Index
OpenID
Manager Data
Manager
Access
Control
Database Query Language
Drop
Box Facebook
home
server Google+
Backing Up the Mobile Semantic Web
Semantic
Index
Database Query Language
Drop
Box Facebook
home
server Google+
PrPl: Federated Semantic Web
Friend’s
Butlers
Friend’s
Butlers
Friends’
Butlers Personal-Cloud Butler
Database Query Language
Drop
Box Facebook
home
server Google+
Best Mobile Experience?
User’s right: not to be snooped!
Best ecosystem for apps
Open competition Best social apps!
Suitable for all apps
Provides the largest social graph
Feed helps apps get viral
Provides social interaction infrastructure
Simple social API
Part 2.
What to do with our distributed data?
Privacy + Marketing Combo
Cloud Service
User Profile
Private Data
in Silos
Ads
DO NOT TRACK
Apps on
Device
User Profile
All My Data
Ads
Use our data
to help ourselves
Paradigm Shift:
More privacy More data Better Ads
Billions phones: Pendulum swings back to distributed
Experience-Infused Apps
Search
Browse
New York Times, Feb. 13, 2011
Idea: Human and socially curated search
Custom Search Engine (CSE)
My Email My Twitter
Extract
Domains
Rank
Domains
Upload to
My CSE
[Nagpal, Hangal, Joyee, Lam, CSCW-2012]
Small User Study (7 Users)
Personalized Search Engine [CSCW 2012]
1
2
3
4
5
Personalized Google
Twitter Email
Ra
ting
Examples
“310” course numbered ME310
“Wow this needed so little typing”.
“iphone5” article from TechCrunch
“Lost check book” user’s bank page
Combining the Search Engines R
atin
g
1
2
3
4
5
Google Google Tweet
Google Tweet Email
Tweet Google
Findings
Experience-Infused Browser
Complement the universal browser
Better privacy
New social media usage
Follow more people,
to populate search engine
Example 2: Personalized Browsing
NYT SCREENSHOT
Experience-Infused Browser
Your
Experiences
Experience-Infused Browser
10101
00110
10100
10101
01010
11101
01010
01010
10101
01010
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10101
01010
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10010
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000
Your Digital
Archive
HOW IT WORKS
<name, type>
<name, type>
<name, type>
<name, type>
<name, type>
<name, type>
<name, type>
<name, type>
<name, type>
<name, type>
<name, type>
NER
Highlighter
[Hangal, Nagpal, Lam, IUI-2012]
Privacy-Preserving Personalization
All personal data on client – no 3rd party
Very rich profile (but unstructured)
Across different services
Each site does not have to implement
personalization
No setup time
Qualitative Study
9 users, browsing organically for 1 hour
Many interesting stories…
7/9 would like to use it beyond the study
User Comments
“I feel like this almost presents me with a personal synopsis of the (web) page.”
“I like the idea of personalization without giving my data to anyone.”
“After I’ve got used to it, and know what to expect for this site, it’s easy for me to see that there’s no new news on it for me today.”
Findings
Focuses attention to relevant parts of
busy pages
Highlights serendipitous,
forgotten connections from the archive
Summary
Musubi
Beta available on Android Play Store
iPhone soon
Personal data analysis
Personalized browser, search engine
Collaboration: Education, journalists, librarians
Need help
Download Musubi, try it
Help build the best ecosystem
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