[Aaron]’s build is very simple consisting of only an Arduino and SD card reader ... and emulate a card using his RFID cloner. What’s really impressive about the build is that [Aaron] says ...

[Pierre] recently bought his first car and decided to make his own RFID electric starter for it! An Arduino Nano controls ... circuit closer to the wheel and use an NFC ring to start it!

Projects that fall into this category include an RFID-based door lock mechanism ... there are several other small Arduino ...