Wave Alarm comes to Android, lets you snooze it with a hand flap
Here comes Wave Alarm for Android to make the whole process a bit easier, after being available on iOS for a while. You can set an alarm to run in the background, and even choose one of your own music tracks on the phone to wake you up, if you don't like the default sounds.
What sets it apart, though, is the fact that you can just wave your hand above the phone, the phone's front-facing camera will detect movement, and snooze the alarm for the predetermined amount of time, or stop it altogether, if you are one of those pesky rise-and-shine types.
If you don't have a front-facer, you can just drag your fingers across the display to snooze Wave Alarm for the time being. We found a pretty decent waving distance, like a foot or even more, to be enough for silencing the alarm.
source: Wave Alarm