We expect that it won’t be long before all computers have touchscreens, but if you cannot wait, Pen And Free has released the Duo. Change your PC or laptop by installing the receiving station atop or on the side of your display. You then define the application area you want to use as a tablet. There are two versions, one for laptops up to 15.4-inches and one for monitors up to 22-inches. The MSRP on the PNF Duo is $44.00