okhi Hardware Keylogger for USB & PS/2 Keyboards

okhi Implant is a compact, stealthy hardware keylogger designed for seamless integration into USB (classic USB low speed) & PS/2 keyboards

Capture keystrokes in real-time (RP2040) without detection and send them via Wi-Fi (ESP32-C2 ESP8684)

Ideal for red teaming, pentesting, hardware hacking, or stealth research scenarios

You can also install it inside your PC tower or inside a physical keyboard

Power consumption: ~120 mA

This version uses a TXCO 12 MHz ±2.5 PPM Abracon ATXAIG-H12-F-12.000 MHz-F25, so it’s much more accurate and stable than other RP/PICO boards. In addition, you could use the implant as a better frequency counter thanks to the TCXO. I use it to measure the frequency of RP2040/RP2350 crystals and adjust capacitors

The 6 Layer PCB is high-quality, black ENIG (2U), 0.8mm thickness. Assembled on both the top and bottom sides, All vias filled with resin and capped, So, it’s easy to do rework, replace a component, or perform a hack/mod. The smallest component used is 0402, so it’s still feasible to work on it by hand.

WARNING: Make sure it fits in the place you want to put it before buying! On some occasions, I’ve had to use a Dremel or handheld drill to make space for the implant

Released under the MIT License

Buying from this Elecrow store and at this price helps keep the Open Hardware project and the MIT firmware alive, and you support the author so they can continue improving and creating more Open projects.

More info: https://github.com/therealdreg/okhi