I'm not sure. Just imagine people forgetting to have their fast pass ready on their phone, phone accidentally turning off, phone dimming automatically, and sometimes the app will even log you out. It's going to be terrible when they allow you to have fast passes on your phone, fast pass line will take forever to get into and probably cause back ups into the walk ways.
I like the open space that the WDW touch points provide, it would help in a crowded park like Disneyland to make more room for people and also makes the line way faster. I'm all for magic bands coming here, if you're here for one day you should get a alternative option to the magic band like maybe a cheaper band or bracelet with a RFID chip. This is a missed opportunity for Disney, especially with that money milking executive (that one guy everyone on here bashes, forgot his name sorry, bob chapek or something?), not only would people be paying money for Max pass if they wanted, magic bands and their little accessories that they sell now could make a lot of money.