We just spent 4 days at Disney World with the G-Kids. Stayed at the Contemporary. Disney is using RFID chips in a bracket they give you when you register.
It is linked to your room & CC, so you can charge your food, trinkets, golf, what ever. You can also use it to reserve a position in line for rides. They use a 6 digit pin for security.
The fact that you don't use cash or cc makes sense. The fact that they are tracking you like a coon dog is a bit unsettling..
I used the loo in Fantasy Land, the speaker in the seat politely suggested I use two(2) sheets rather than my normal one(1).. Seemed worrisome, but reasonable??