This script creates an access control system that only requires each user to have a basic cellphone that can make a call.
This has been in every day use since it's creation in 2014, it has been stable and solves our access control problem.
Here is what you will need
- Raspberry Pi
- Piface Digital Addon Board
- An electronic lock, wired up to the first relay on the Piface digital.
- A Twilio number
- Pord forwarding on your router
Let me know if you get stuck or need help.