Solitude, Brighton and Snowbird also use the same tech. I know Solitude has had contactless lift ticket swiping in place for well over the past decade.

Also Squaw Valley in Tahoe. Ski passes are a great use for RFID! Their season passes are prox cards with a photo ID on them. Edit: they also work from 1-2 feet away. You just leave it in your pocket and walk through the gate.