Space-time-travel is the ultimate biometric
> Cell phones are generating a staggering amount of geo-locational data (600B transactions a day being created in the US)
> This data is being “de-identified” and shared with third parties – in volume and in real-time
> Your movement quickly reveals where you spend your time (e.g., evenings, working hours) and who you spend time with (e.g., friends)
> Re-identification (figuring who is who) is somewhat trivial