proof ink
It is a patended application that records/photographs someone signing on a tablet device using the rear facing camera. It is a proof of signature application that captures someone signing for a credit card payment on a tablet or a package delivery (FedEx - UPS) - and teh tablet captures a picture of the person signing for the package ALONG with a picture of the signature to marry the two together to show PROOF INK of who singed for or received the package - credit card payment.