eBay
Anyone looking for a Fingerworks MultiTouch device knows what these devices are capable of and for… They also know the rarity!!!

You can still receive support on this keypad, including drivers! The manufacturer has closed, but there's a volunteer support community here: http://fingerfans.dreamhosters.com

I modified an Apple A1242 keyboard to receive a Fingerworks MacNTouch (internal laptop keyboard replacement) to be an external USB keyboard with a built in USB hub port underneath.

It was a fun project and I hope someone enjoys this custom ONE-OF-A-KIND piece of history. Fingerworks was purchased by apple in 2005 and the technology became the basis for the multiTouch interface of the iPhone and future iOS devices & trackpads. Fingerworks stopped selling products (SO sad) after being purchased. 

Additionally, Apple no longer makes and sells the Mini USB Wired Aluminum keyboard (A1242).

Neither of these products are available separately any longer. Furthermore, I have never seen anyone merge them like this before and so they are not available anywhere else in this configuration!

The portability of a mini keyboard and the power of multitouch and the convenience of USB.