This project is a GSM based controller to switch any electrical or electronic device on/off with your mobile phone. The device has the capability of saving upto 40 registered contacts and only those contacts can control the devices. This how authentication works. All the other non-registered users will not be entertained.
The device is free from all possible security flaws varying from registering users for confirmation or status messages of the device. Registration of the users is live so no discomfort while registration. Only the master has the capability to delete the registered users or reset the device.