Well on the HTC Incredible you can make it extremely hard to answer your phone because it allows you to customize your unlock screen. Meaning instead of sliding down by default, you could set it up to where you slide right, up, down, left. But you must to send it in 4 directions, obviously I don't use it because that would be crazy. Maybe the MOTO has something like that and most people don't know about. You can also set it to tactical feedback only, so when you slide it doesn't show any lines.