So In this project, me and my friends made a smart door or a smart lock system. So how it works is that we have a card and we tap it to the RFID of NFC and if the card data or ID is right the door will be unlocked. To make this we used a micro:bit, micro:bit extension, selenoid, NFC, wires, touch sensor and a battery. We also use some website for this projects which are makecode micro:bit for the code, firebase for the database and one more website that we use as a dashboard so we can see the data.