Windows Phone Thoughts: SignWise: Signature-Based Protection For Your Pocket PC

"There are many applications that protect access to PDAs, but almost all of them use passwords or PINs to authenticate the user to his or her device. SignWise uses personal hand-written signature to authenticate. Signatures are much more secure than passwords or PINs in that they cannot be lost, forgotten, or shoulder-surfed, and are extremely difficult to forge."



Looks interesting -- has anyone tried it?