Deer Valley is going to RFID.  Peak Resorts location will be using VR RFID soon.  Sierra-at-Tahoe is going to RFID.  It's becoming standard in New England.  Gore is adding RFID.  What resort isn't using RFID yet?

The FAQ on Sierra-at-Tahoe is pretty good.  Includes a question about avalanche beacons.

https://www.sierraattahoe.com/rfid/

"The radio frequencies used by RFID are assigned by regulatory agencies around the world to help ensure that no interference occurs. Avalanche beacons operate on 457kHz whereas the our RFID readers are on the 13 MHz frequency, so no there is interference between the two."