The day when a portable device like this becomes mandatory will be the realization of the film "Minority Report" - but instead of two "precogs" snitching on you, you'll be snitching on yourself!
Holy shit!!
...is what I would have thought/typed/said, if I was a test subject in this study. :-/
By the way, I fully trust Facebook with this technology. :-|
The day when a portable device like this becomes mandatory will be the realization of the film "Minority Report" - but instead of two "precogs" snitching on you, you'll be snitching on yourself!