This library is the result of reverse-engineering the communication protocol of a Chinese USB 125Khz RFID Reader/Writer. A detailed document describing the whole procedure can be found at the wiki ...

This is a small python program that will listen for RFID tags and play a specific audio file when one is detected. You can use the web interface to see what is playing, link new RFIDs and sound files ...

Through some Python code and shell scripts, when scanning a card, the Pi Zero is able to trigger all the Google Home compatible devices in the house to play the album selected at the same time.