The victim's card is apparently kept by the machine and the thief steps in and offers to help but asks the person to type in their Personal Identification Number (PIN).

BBC: Cash machine - generic

CowView uses a type of RFID (radio frequency identification) called UWB (ultra-wideband) technology.

BBC: RTLS: The technology tracking cows to make them happy

An investigation by TurkTrust revealed that in August 2011 it twice accidentally issued the wrong type of security credential, a form of identification known as an intermediate certificate.

BBC: Google detects fake website ID certificate threat

When Mississippi Gov. Phil Bryant signed the state's voter photo identification measure into law this month, the move harkened back to the type of discrimination Simmons' grandmother and others faced during the tumultuous civil rights era, the state legislator said.

CNN: STORY HIGHLIGHTS