There has been quite a bit of debate over adding facial recognition and allowing pop-up marketing on devices such as Google Glass - think iBeacon updates as an overlay on your vision. Today's IFTF artifact gives some control back to shoppers, using information overlays to help us identify the risk/reward for snacking.

Though I have to wonder if facial recognition could be just as useful. Walk in to a party and get an overlay of someone's real age, Facebook relationship status, favorite book or film, and how many times they've been married. Oh, and throw in their credit rating and you might fend off the jackals.