Apple seems obsessed with researching methods to identify users of iPhones, iPads and other iOS devices. The last effort is a patent that describes a device with sensors capable of figuring out the user's hand shape and adjusting the device's settings and buttons based on the user's profile. The sensors would be placed on the back surface of the gadget. According to the general idea of the patent, the sensors could be used to create button areas under each finger, letting you hold the device whatever way you desire—right hand or left, both, or death grip. [Engadget and Slashgear]
I think good voice recognition is the way to go. If you could reliably log in by saying "Ted" and it knew from your voice that it was Ted Smith and not Ted Jones, why go through all this extra hassle? I mean, a sensor on the back of my hand, to save me the "hassle" of logging on? Really?