The document discusses how cities can analyze aggregate anonymized data collected from people's movements and wireless devices to better understand how cities function. This data could help identify patterns in traffic, social groups, and population flows. It raises concerns that this valuable data is being given away to large tech companies without compensation or consideration of who owns the aggregate and individual data traces.

1. NOBODY KNOWS HOW CITIES WORK

2. {found,"00:0E:ED:1E:66:59","2005-08-18T08:49:14+01:00"} {found,"00:12:62:2C:9E:E0","2005-08-18T08:49:44+01:00"} {lost, "00:0E:ED:1E:66:59","2005-08-18T08:49:59+01:00"} {lost, "00:12:62:2C:9E:E0","2005-08-18T08:50:29+01:00"} AUTOMATION SCALES BETTER

3. EVENTS => STATISTICS

5. Identify friends and social groups

6. Predict peak traffic/conflict points

7. Before/after testing of road changes

8. Understand why people move around OTHER ANALYSES

9. The aggregate movements of people round a city is an invaluable dataset

10. YET WE ARE GIVING THE DATA AWAY! GPS -> PHONE -> FACEBOOK -> ???

11. WHEN NOT OVERREACTING

13. Who owns the aggregate data?

14. Who owns the individual traces?

15. What can we do with all the data?