I do have earphones with a button, and the button already works to start and stop my music and skip to the next track (with two presses). But sometimes it gets delayed for up to 5 seconds (for reasons I've never understood). If Pressy can fix that then great. But if it can't then there are going to be a lot of disappointed backers out there.

One of my long-term disappointments with Android is that they never used the modified plug the iPhone uses that also allows for volume control. But then, Apple may have patented it.