Sony soon to release TOF sensors
Sony are reportedly close to offering laser Time-Of-Flight sensors to Apple and Android OEMs. These sensors allow a phone to build up a three dimensional map of a face or environment. The current iPhone system is also three dimensional, but uses distortions in a projected infrared grid instead of measuring distances directly.
My interest in a TOF sensor isn't security based; I'd like a handheld 3D scanner for use in the workshop.