At best, some styluses are pressure-sensitive. At worst, they're just a "dumb" piece of material with a plastic nub on the end. The Phree Writing Device is neither. It uses patented Optical Translation Measurement (OTM) technology to let you write on nearly any surface — a tabletop, a dashboard, your hand — and is compatible with tons of different software. It has an OLED touch display that lets it do more than just doodle, as it can also function as a handset for phone calls, and can display incoming texts (you can even use it to write back a response). The optional carrying case doubles as a stand for your phone, and with an open API, its utility isn't limited to what it can do out of the box.