Facedeals - This Is Pretty Neat

It's opt-in though so you only do it if you want the discounts, you're comfortable with the location, etc.

Pretty cool BUT, even if you 'opt-out' the system wouldnt it still need to 'read' your face and perform its analytics to make that determination which means it has recorded and stored the facial info somewhere even for a short time. Who decides how long that retention is and who legally has access to that information. Could 'authorities obtain those also?

hmm.. privacy issues and questions abound and are certainly at odds with supposed benefit. At least in my opinion.

Isn't that the same question for Facebook? ;) Except a billion times bigger and more important than this little app?

It would seem to make sense that a police department had similar facial recognition technology linked to a database (mugshots?) so that when a person entered the precinct, district station, etc. the officer could be notified that they had outstanding warrants, had a history of violence or was a person of interest in a crime. Recall the violence in a Detroit police precinct.