Since grammar school I have heard about the “human chip” that some say would eventually store all your personal information and wipe out all other forms of currency, since the chip would be the most convenient. Most people I talk to say that the chip is in fact the coming of Satan since this “mark of the beast” is in the book of revelations and it closely resembles what the Bible talks about. These chips are used to store almost any type of data, or so it seems, from medical history to payment information. They can even store passport information. In 1998, Malaysia came out with e-passports which recorded the time, date and place of when they came to and from. Some argue that while the chip is revolutionary in convenience and even safety, others argue that it can cause some major problems since people could become the victims of identity theft.
http://en.wikipedia.org/wiki/RFID