RecognizeMe is a new tweak in Cydia that allows you to unlock your iPhone using biometric facial recognition. Indeed, the application is the first of its kind in the iPhone and not doing bad at all. Obviously if the application for some reason does not work, and thus recognized, can still be accessed by entering the passcode. Below you can see how the application works.
RecognizeMe is compatible with iPhone, iPod Touch (in the future will add support for iPad 2) and is available in the BigBoss repository at an introductory price of $ 6.99