Introduction: Arduino RFID And/or QR Code Windows Login
There is my latest short fun projects with my Arduino leonardo pro micro.
In this instructable i put two short, almost same example.
The first: login to windows with RFID card.
The second: use your android phone, scan QR code and login to the windows.
Step 1: The RFID Login
Its very simple, RFID library code modified.
If the card accepted by the reader, the arduino type the password to the windows login screen.
Arduino code in the video description. Check the short how-to video.
Step 2: The Android QR Scan Login
In this project, i added a small QR code to my windows login screen background.
The ai2 app scan this code, and send a string to the arduino to type the windows password.
This android app is the same of the "Arduino QR code door open" project app.
Total safe, the QR code useless without the app.
Arduino, android code in the video description. Check the how-to video.

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13 Discussions
3 years ago
Can i use an arduino UNO for this?
Reply 3 years ago
Arduino UNO don't have keyboard/mouse emulation.
4 years ago
hi. that' s amazing project but how is the connections I use Arduino Leonardo
5 years ago on Introduction
Hi, thanks for sharing.
Is it possible to share your windows login source code ?
Im planning to do samething for iOS.
5 years ago on Introduction
Can the QR also on wifi and not bluetooth?
Reply 5 years ago on Introduction
I think its can work with ethernet shield or ESP8266 too.
Reply 5 years ago on Introduction
or qr-code through cam or something. like you do with qr-code to log on windows
Reply 5 years ago on Introduction
You mean windows cam scan the qr code. I think yes, if you have app for that or programming skills. i don't have.
6 years ago
Smart idea! Thanks for shearig :)
6 years ago on Introduction
Brilliant idea. What a nice little arduino project. I love the way you have made the arduino type the password so no extra software is needed on the PC beacuse having to install another program just to do another tiny task really annoys me. So well done :-)
Reply 6 years ago on Introduction
Thanks. If delete the arduino code, and copy the "password writing (keyboard.print...)
part" to the void setup() with 2-3 sec dealy, you have a simple, pendrive size hardware key.
Just plug in, and login automatically :)
6 years ago on Introduction
Nice concept! Thanks for sharing!
Reply 6 years ago on Introduction
I'm glad you like it, thanks.