A few months back, [John] was reading an article about a simple RFID security system kit, and decided he would like to build one himself. While many of the system’s details, including full s… ...

Cool. I wonder how difficult it would be to scrap the RFID system and work with a wi-fi hotspot using WPA2 that unlocks when authenticated with the MAC address of your phone.

The authors propose the use of RFID technology and an Arduino board for the same. Every product will have an RFID (Radio-Frequency IDentification) tag (instead of barcodes being used conventionally).