Ever wished to really feel like a kind of film hackers from the late 90s? Sure, your basement’s filled with overclocked Linux rigs and also you’ve made certain all of your terminal home windows are set to inexperienced textual content on a black background, however that’s not all the time sufficient. What you want is an RFID tag that unlocks your PC once you contact the reader together with your RFID card. Solely then could you resume blasting away at your many keyboards in your valiant makes an attempt to hack the mainframe.[Luke] brings us this construct, having wished a better strategy to log in rapidly with out foregoing primary safety. Seeing as an RC522 RFID reader was already available, this grew to become the idea for the mission. The reader is laced up with a Sparkfun Professional Micro Arduino clone, with each gadgets serendipitously working on 3.3V, obviating the necessity for any degree shifters. Code is straightforward, primarily based on the present Arduino RC522 library. Upon a profitable scan of the right tag, the Arduino acts as a HID keyboard and kinds the person’s password into the pc together with a carriage return, unlocking the machine. Easy!
General, it’s a tidy construct that achieves what [Luke] got down to do. It’s one thing that may very well be readily replicated with a handful of elements and a day’s work. In the event you’re within the underlying specifics, we’ve mentioned turning Arduinos into USB keyboards earlier than.