@ instructables.com:
How often have you felt tired of typing in the password to unlock your PC/laptop every time it got locked? I’m used to locking it down quite a number of times, everyday, and nothing is more annoying than typing the password/pin over and over again, every-time I want to unlock it. When the need for something becomes essential, you are forced to find ways of getting it. As the saying goes, “necessity is the mother of invention”, the lazy mind in me started to think of an easy and a cheap way to unlock my personal Computer/Laptop every time I had to lock it. As I went through my stuff I found a RC522 RFID module. That’s when I decided to make an RFID system
Windows PC Lock/Unlock Using RFID – [Link]
Thank you so much for your support on sharing this project.