Promoting location privacy… one lie at a time

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Daniele Quercia

"Promoting location privacy… one lie at a time" Talk at Imperial workshop on Privacy

promoting location privacy…

promoting location privacy… one lie at a time

daniele quercia

meets

mobile phone location data

recommend social events…

… upon aggregate location data

upon aggregate location data…

upon aggregate location data…

upon aggregate location data…

upon aggregate location data…

#fail $

aggregate data:= data mashup

!!! Public vs. Publicized

Aggregate Data: A tale of disrupted social expectations

share it all [by Facebook CEO]

share it all [by Facebook CEO] share nothing [by Wisdom of the Granmother’s Foundation]

share it all [by Facebook CEO] share nothing [by Wisdom of the Granmother’s Foundation] share fake data [by Us]

share fake data [by Us]

Idea:

true location + + “99” fake locations

true location + + “99” fake locations true location + + “99” fake locations true location + + “99” fake locations

#phones?

(random) fake locations

Tube passengers in London & car drivers in Zurich: accurately estimate #people

Tube passengers in London & car drivers in Zurich: accurately estimate #people (18% error with 99% fake locations)

(random) fake locations

(random) fake locations Evade paying taxes? Don’t answer! Flip a coin instead

Yes! [truth]

true location + + “99” fake locations true location + + “99” fake locations true location + + “99” fake locations

promoting location privacy… one lie at a time

Future

Future 1|social norms

Future 2|reintroducing forgetting

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Promoting location privacy… one lie at a time

1. promoting location privacy…

2. promoting location privacy… one lie at a time

3. daniele quercia

4.

6. mobile phone location data

7.

8. recommend social events…

9. … upon aggregate location data

10.

11. upon aggregate location data…

12.

13. upon aggregate location data…

14. upon aggregate location data…

15. upon aggregate location data…

17. aggregate data:= data mashup

18. !!! Public vs. Publicized

19. Aggregate Data: A tale of disrupted social expectations

20. share it all [by Facebook CEO]

21. share it all [by Facebook CEO] share nothing [by Wisdom of the Granmother’s Foundation]

22. share it all [by Facebook CEO] share nothing [by Wisdom of the Granmother’s Foundation] share fake data [by Us]

23. share fake data [by Us]

25. true location + + “99” fake locations

26. true location + + “99” fake locations true location + + “99” fake locations true location + + “99” fake locations

28. (random) fake locations

29. Tube passengers in London & car drivers in Zurich: accurately estimate #people

30. Tube passengers in London & car drivers in Zurich: accurately estimate #people (18% error with 99% fake locations)

31. (random) fake locations

32. (random) fake locations Evade paying taxes? Don’t answer! Flip a coin instead

33. Yes! [truth]

34. true location + + “99” fake locations true location + + “99” fake locations true location + + “99” fake locations

35. promoting location privacy… one lie at a time

37. Future 1|social norms

38. Future 2|reintroducing forgetting