PlayStation 3 Getting Wireless Keypad in November, Features Mouse-like Touch Pad
As it utilizes Bluetooth technology, the pad can be used with any other Bluetooth-compatible device, such as a smart phone or a laptop, and charges its battery via a USB connection.
With a toggle switch, the "entire surface of the keypad" can be used as a mouse-like touch pad, according to Sony.
"In this mode, you can slide your finger on this area to move the cursor on the screen and tap to enter," SCEA hardware marketing director John Koller wrote on the official PlayStation Blog. "There will be two short cut buttons on the Keypad that will enable users to jump directly to the XMB's 'Friends' icon and the 'Message Box' during gameplay."
Seems like an awkward place to put a keypad. I would think you would want it closer to your thumbs.