Just saw this interesting little project:
It acts as a single key of a (Apple) USB keyboard:
Full article: http://seb.ly/2017/07/calling-al...
This looks awfully like Flip's One Key project using V-USB with the ATTiny85 from 2008.
Ross McKenzie ValuSoft Melbourne Australia
It does, doesn't it!
But now brought into Arduinoland.
Exchange the button for an RFID reader. Rewrite the firmware to be able to "learn" to recognize a specific RFID tag. Rewrite firmware to send not one keypress, but a series. Store a password in EEPROM. Apply lockbits.
Not very secure, but given a fitting environment.. Lock PC when leaving it for getting or "discarding" a mug of coffee. On return, apply RFID tag.
At the moment you realize you've lost the RFID tag, run to computer, grab emergency hammer you have next to gadget, smash gadget. Phew! ;-) (No, of-course you only need to chip-erase it..)
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... work on your laptop in the company kitchen instead.
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