Much like their bluetooth cousins rfid chips require very little energy to be powered and are quite effective at communicating over short distances.
Rfid door lock app.
For a more in depth look at rfid tech check out this article.
Rfid and iot esp8266 rfid based remote access door lock in this tutorial you will learn how to make rfid and iot based remote access door lock system using nodemcu esp8266 wifi module mfrc522 rfid module electronic lock and blynk application.
Using rfid tags hidden around outside i can put them to the reader on the door and have the door unlock.
The way the code works is we have 3 different rfid tag uid s in the arduino program that will only unlock the door if scanned in the correct order.
4 doors proximity rfid card access control system with 600lbs magnetic lock 110 power supply box extra power unit rfid reader exit button key fobs phone app open lock 5 0 out of 5 stars 18 429 99 429.
If i have my phone on me i can also unlock the door via an app i created.
Here we ll focus mainly on the newer nfc standard for rfid chips and its applications to access control within smart door locks.
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Rfid and iot based remote access door lock system introduction.