The report clarified by saying that “This isn’t a method for unlocking similar to iris or fingerprint scanning; instead, Samsung wants to use palm scanning to ensure that the user requesting for the password hint is the owner of the device.”
According to the patent, the front camera is used for taking a picture of the palm, which means it’s not a totally secure method despite how unique your palm lines might be. But, unlike photos of your face, someone taking a picture of you holding out your palm would be somewhat rare. Plus, the patent suggests that the password hint won’t be simply displayed on the screen, but scattered across the lines in a haphazard manner.
New Samsung Patent Hints Palm Scanning Technology for Its Upcoming Smartphones | Press News Release
