I decided to audit my large collection of RFID hotel keys I’ve collected over the years. Just to get an idea what’s out there, and look for patterns and anomalies.
One strange set I found is from the Waldorf Astoria in Park City. Didn’t respond to HF or LF search, but it clearly says right on the card, “hold key within 1/2 inch of locking device.” I wonder what they’re using if it doesn’t register at all on the Proxmark? I have four of them, maybe I’ll see if I can crack one open to see what’s inside.
The Hilton cards, for the most part, revert to hardnested attacks, but fall rather quickly, as opposed to the Sheraton card I was battling earlier in the week.
I guess I have about 75 card dumps in total now, about 40 of which are Hilton.