The Motorola Backflip (http://www.gsmarena.com/motorola_backflip-3079.php http://www.gsmarena.com/motorola_backflip-3079.php) actually had a touch pad in the ba

The Motorola Backflip (http://www.gsmarena.com/motorola_backflip-3079.php http://www.gsmarena.com/motorola_backflip-3079.php) actually had a touch pad in the back that could be used in the same way trackballs were used on Blackberries. It was pretty awful to use, though that might have been because it ran Android 1.6