There are four registers at my store (all express that only get used on BF, thankfully) that crash if anyone tries to enter their TM number. As such, those are like the designated price inquiry and merch locate registers, you can see the little 1/4" strip of paper chains from all the PI/Merch Locate's people do. That is, if merch locate doesn't crash the registers in the first place.
I also believe our registers were updated to accept the chips, but the slot is covered up on all the card readers.