RE: Criminals Stealing My Card ID #: Apparently I'm not as concerned about this as some people are. I put a Visa CC on my room. If there end up being fraudulent charges on my bill at the end of the week - BAM, Visa takes care of it. And the most expensive thing that is ever in my room is a tablet/netbook....and they fit in all the safes I've experienced. I'm more worried about someone dodging in and out real quick while housekeeping props open 2 doors at a time, than I am about someone loitering in a Disney resort hallway with a complete Mr. Gadget kit so he can see which room I'm in, scan my card, produce a fake card, and go into my room only to find my giant pile of socks in the corner. Besides, how long is one criminal going to creepily hang out in a hotel hallway before SOMEONE (Manager, Housekeeping, Maintenance, Guests, etc) say something? He's going to be able to try it on one room, tops, per resort or building.
RE: Proximity: With doors, the proximity sensor is set to 0 (i.e. touch). Same for the "Orbs on a Stick" that they used to test FP+. They will likely set their "Painless Payment" systems the same way, just like many credit card terminals already do that accept Credit Cards with the )))) symbol on them. They don't want to be able to scan it from your pocket to make a purchase. They need to see it in your hand, and to be within an inch or so of the device.
They will indeed use long-range proximity readers at queues, ride exits, gift shop exits, smoking areas, bus stops and other key areas throughout property. This type of application will tell them how many people are waiting for buses or using smoking areas. They'll count guests using park restrooms, and dispatch custodial accordingly based on usage (and they'll be able to target and project labor more accurately, putting more custodians in a certain area at higher usage times). They'll scan you as you come off a ride, and at the exit of it's gift show, so if you're one who gets off Pirates and sprints through the gift shop....you just get counted. If you linger, you'll get e-mails with marketing literature for pirate merchandise.
They'll know how many times you ride a certain ride. They'll know ACTUAL wait times without using the red cards, because they'll scan you at the queue entrance and at load....and they'll be doing it continuously for every guest with a readable ID.
RE: Benefits: There's no doubt that this technology will benefit Disney more than it will the guest. But, at the same time, some of those Disney benefits could trickle down as indirect guest benefits. As with the example above about the restrooms, there's no doubt in my mind that they'll count visits to the bathroom (not individually, but as an aggregate), and will thus be able to schedule custodial labor and stock supplies in a more efficient manner. While Disney will save money on labor, the guests will also benefit in more appropriately maintained restrooms.
And, if they utilize it correctly at bus stops, they'll be able to actually dispatch buses to the depots that have guest waiting at them (instead of sending 3 buses to an empty stop, which we ALL know they are well known for doing now).
But as others have said, they will use this technology as a method of collecting data en mass. A large portion of the $Billion will undoubtedly go toward storage servers and data processing computers...plus the software they're probably writing themselves, or in partnership with someone like SAP. They're going to track the movement and habits of every guest, analyze it based on every demographic you can imagine, and target market based on purchases, time spent in the parks, time spent at your resort, whether you're using Disney transportation or not, and what types of stuff you buy.
This is data mining to the max, with the added perk of reducing labor and adjusting to crowds better. The cherry on top is that they can add some guest conveniences along the way, and offer things like interactive queues and FP+.
If you look at it the way I do, it's win-win....but there's a much bigger WIN on Disney's side of the fence.