Accordingly, the all-in-one tri-band mobile phone keeps all the usual PDA data of appointments and addresses and phone numbers, and it is its own pen into the bargain.

Whatever a user writes on, the PenPhone will interpret their hand movements as written words and it can be set up so that the phone translates them directly into the SMS editor, so users can write their SMS messages directly into the mobile phone. It couldn't be faster or simpler.

Being 140 mm long and 19 mm in diameter, the pen certainly breaks new ground in miniaturization and mobile design - we'll stop short of considering it a breakthrough in convenience and functionality until we've used it.