Has anyone tried Square on the Tab? I set up an account and was approved. I'll have to wait on the card reader to ship. The site says the Droid Incredible I have is compatible but as long as the device is running Android 2.2 and has a 3.5mm jack, I don't see why it wouldn't be compatible. It sure would be easy to sign your name on the Tab compared to a 3.7 in screen. It would look a little more professional too. Has anyone tried it?