Thursday 12-2PM, 02-08-2007
From CENS Urban Sensing
Thursday, February 08, 2007
CENS, Urban Sensing
Contents |
Campaign Meeting
Presented by Thomas:
City Sniff – Gather pollution data in the environment.
Several sensing technologies were presented.
Sensor nodes.
Ozone sensing.
Netcar Project – Internet connected car
Gumstix Microcontroller
A small 4-node sensor network will provide 3D acceleration view of the car
Slogged to Sensorbase via GPRS
Uses: Find potholes; road conditions; speed statistics; car maintenance monitor
– e.g. sense decreased gas mileage.
Weekly Campaign Ideas:
Andrew –
1) differential GPS in order to increase accuracy of our GPS devices.
2) LA/UCLA shuttle equipped with GPS so that one can tell where they are. See: http://www.busmonster.com
3) GPS at Disneyland to tell: length of lines, speed of service, etc.
4) Dating application - sensing actual living habits of people rather than reading dating profiles.
5) and more!
Jason – 1) Run a PAL-2 with a larger number of participants and a new geographical input region. Get LA-based input on the utility vs. privacy issue.
Elisa – 1) In highly occupied areas, sense available locations – e.g. Powell library reading-room seating (esp. around the times of midterms/finals), parking spaces
Mark – 1) …technical difficulties…sorry Mark. (Something about having a live feed of campaign contributions and geographically tagging political information?)
Nicolai – 1) Placing bluetooth sensor beacons in various locations and having people walk around with bluetooth sensors to see crossing paths, etc. (similar to Familiar Strangers)
Vids – 1) Cheap gas – locate ‘cheap’ gas by taking a picture of the stations prices and geo-tagging with GPS
David – 1) Carpool inspired – driving route (down to a side-street level of granularity) traffic, etc. See: http://trafficinfo.lacity.org/
Jeff – 1) Neighborhood boundaries – photograph what you consider to be the boundaries of YOUR neighborhood.
Eric – 1) Mass-messaging system for alerts (location-specific)
August – 1) Be able to contact people around you (checked via bluetooth, perhaps) via telephone to see if you would like to meet.
Upcoming Campaigns:
DIET II Campaign – Tentative startup, one week+
NOTE: Diet II's start-date will coincide with GPS campaign end-date.
Owner: TBD
Architecture Meeting
Action Items:
Jason/Vids – Look at ways to improve current GPS acquisition (not necessaryily technical)
August – Look into reradiator
Andrew/Vids – Sketch privacy ideas specification for campaigns
Mark/Gong/Vids/Jeff – SB IT security; meet with Ross Bollens
***Make all uploads HTTPS***
Institution Review Board (IRB)
- will submit project for review when sound campaign begins
Data Protection/Privacy:
1) User Auditing/Release – To whom, for what purpose, selective sharing, granularity, etc. Users to have access to data first before released. Can we use individual accounts? Buffering (choosing what to upload vs choosing what to NOT upload.
2) IT security, esp. of SB
2a) Transmit security; HTTPS uploads, SSL
3) User Access (subset of 1) – who and what.
4) Indentity (concealment) – Attachment/Inference. Research OpenID.
5) How to tell backend ‘no data’ without revealing something
6) Data perturbation to protect individual (randomized response)
7) Filtering by user
8) Service layer (trusted) that will translate latitude/longitude into the user-specified granularity (e.g. zip-code only). This layer could also serve as a data quarantine before it is released to SB.
Paper Research:
Thomas - Golle, P., F. McSherry, I. Mironov. (2006) "Data collection with self-enforcing privacy," CCS'06, October 30 - November 3, 2006. Alexandria, Virginia.
David - Agrawal, R., et al. (2007) "Enabling the 21st Century Healthcare Information Technology Revolution." Communications of the ACM 50(2):35-42.
Elisa - Pettersson, J.S., et al. (2006) "How ordinary internet users can have a chance to influence privacy policies," Proc. NordiCHI, 14-18 October 2006.
Privacy Proportionality paper:
Addressed: Utility of data collected vs. Invasiveness of privacy
Thoughts: How do we measure "utility"?
