I have one real PATS key cut and programmed for my 97 Mark VIII. I have a key from a car being junked, paired with a plain key cut for my car for a backup. I want to remove the RFID/chip from the key and attach it either to the plain key or to a smaller item on the key ring. I have done similar with newer/different technology PATS keys (I pulled the chip from one for a remote start, one for a cheap backup key), but it isn't obvious to me where the chip is, and if it is something I can remove without destroying it (I don't care about the key). Alternately I was planning on cutting off the part of the key that goes in the tumbler, and make it an ugly key fob. Maybe embed it in the RKE fob. chip from a key that works with my 2000 Grand Marquis: obvious cap where chip is in head of key: Yes I am too cheap to buy one off eBay for 40-60 bucks. I have a spare now and was happy, but there are times where I want two sets of keys and fobs in play (and one spare in a safe place).