Tomas| Quantity | Component name | |
| 1 | × | USB keyboard |
| 1 | × | USB 2.0 hub |
| 1 | × | Fingerprint reader from a laptop |
| 4 | × | thin wires (black, red, green, whilte - to follow USB standards) |
USB keyboard mod to add fingerprint reader
To make my life easier, I've modded my old good HP keyboard and added fingerprint reader from old laptop.