[d3ad0ne] came up with a way of dumping files onto an SD card by using the USB HID protocol. We’ve seen this sort of thing before where a microcontroller carries an executable to extract data.

We’ve seen a few people turn the Zero into a single USB gadget, but what about turning the Zero into a USB HID device ... a small portion of the Pi’s SD card. There are plenty more USB ...

Integrates seamlessly with the contact interface of any HID Crescendo™ card. USB smart card reader with biometric verification capability for desktop use. Especially well-suited for logical access ...