Why use old fashioned keys when you can use newfangled electronic keys? If you are looking to build a simple RFID-based security system to secure your important stuff, this project from Resin.io ...

We have an RFID system at Bloominglabs and among other things we have motion sensors about, however they are of the PIR ‘joke’ variety (you use what you have).

Evans predicted that the global market for RFID-based security and access-control applications could grow 450% over the next 12 months and a further 95% in 2006. NEC also claims that the system ...