“The following is from the ExtremeTech book: RFID Toys. Today we’ll show you how to create your own RFID access card to get into your front door. For an explanation of RFID, check out our previous Getting Started with RFID feature.

There are many uses for RFID such as supply chain management, but access control is one of the most relevant applications for personal use. Many people use RFID access cards to get into buildings, use elevators, or even open the doors to those special penthouse type hotel suites. Setting up your own front door (or any door for that matter) with an RFID enabled access mechanism is pretty easy.”