@janman I've been considering a wrist computer in a similar vein. What I ended up with was a wearable computer. A sewn forearm case using a Raspberry Pi and TFT Touchscreen sewn into the cloth for a wearable computer. Though it also needs to be custom programmed. Raspberry Pi Zero W + TFT Touch Screen available on Adafruit, plus a small rechargeable battery pack, and some conductive thread.
DecoyOctopusX's comments