Some Starwood hotels (Element, W Hotels, Aloft) also offer
mobile keyless entry. I've used it and it's really great, though there are definitely more steps like downloading the app, registering it, and then opening it each time you approach your room door.
I'm also hopeful that Disney will partner with phone companies, but I don't think they're going to go out of their way to do so for several reasons:
1. Among many functions, MagicBands help Disney collect a lot of data. They feature
always-on radio transmitters that can communicate with long-range readers located throughout WDW on attractions, shops, bus stops, walkways, event spaces, etc.. This function continues to teach Disney about guest behavior, from how many people stop to watch a street performer to how many are waiting for a particular bus to property-wide traffic patterns. The possibilities for this data are so vast that they've only begun to scratch the surface of these possibilities.
2. MagicBands were billed as a way to create new customized experiences. Everything from having an attraction say your name, to letting cast members know when you should get a little extra magic. Again, the promise of this technology is still in the early stages. I think that dream will still take time to be realized but it's in the future.
3. The MagicBand payment system has proven to be very effective in stimulating guest spending. Phones might do the same, but then the payment information isn't tied to your Disney ID (
MDE login), so they can't tie all that data back to the user.
4. Phones and smartwatches can't really replicate the long-range function just yet. MagicBands are power efficient (their battery can run for a couple of years) and work without user intervention. Phone makers heavily lock down what's allowed on the phone. The NFC function (Apple Pay / Samsung Pay /etc.), can't just be activated by Disney... they are heavily secured parts of the hardware and software. Also, apps can't just do whatever they want. Apple regulates apps to keep them from sucking up resources in the background. So Disney would need to ask Apple (and maybe others) to break some of these limitations, which I think would be hard and expensive.
Mostly for reasons 1-3, though, I think Disney wouldn't be motivated to push something other than MagicBands for now.