No-Touch Capacitance Device

Inspired by many no-touch devices for use on capacitance touch screens, such as ATMs, POS terminals and phones, I designed this simple compact and (hopefully) waterproof device. It can be carried in a purse or pocket. An O-ring seal prevents dust and moisture from getting inside and corroding the AAA battery. A conductive rod leading from the battery to the exterior is used instead of your finger to enter data or sign on a touch screen.

3 .stls provided: TSD-CAP (the cap), TSD-1 (the body) and TSD-1_HALVED, if you'd prefer to print each half separately and avoid removing a lot of interior support.

You'll also need a AAA battery (even a mostly dead one will work) and a short piece of conductive material. I used a brass screw with a rounded decorative top, without sharp edges that could scratch a touch screen.