The new keycard touch-to-pay terminals were activated at Port Orleans this morning (a few days later than first planned due to some technical teething problems). You can now pay using your RFID-chip based room keycard at all of the Port Orleans lobbies, shops, restaurants and bars (along with the theme parks and other WDW locations). As far as I know, you cannot use the new system in the laundry rooms, arcades, lockers, etc. though.
Also, if you check in online from now on you should be offered the option of setting up a security PIN number for your keycard, which will save a little bit of time creating one when you arrive. The original intention was to only use the PIN numbers for transactions over $50 at WDW, but more recently all transactions require you to enter your PIN.
Andre