The software is not yet approved, oh, and you'll have to build the receiver unit, too. That's right, break out the soldering iron and get comfortable with integrated circuits and transistors. It's not simple for everyone, but it's not rocket surgery, either. Lest the tinfoil in your hat start to chafe your scalp, rest assured that communications between devices is encrypted for security. All the instructions and details are at MyDoorOpener.com, and at least they provide schematics so you can make the stuff yourself, instead of buying some black box that puts your monthly balance in the red.
[Source: MyDoorOpener.com | Photo: Oleg Alexandrov CC2.0]