Anyone who calls to switch on or off the computer should be able to limit the number. Anyone who knows the status of the computer through SMS should turn it on or off.

If you really need it, please customize it by embedded developers;

If you know electronic production, I have a relatively simple method:

Making a specific binary code into a ringtone as a short message ringtone and an incoming call ringtone, and setting the ringtone as a specific short message ringtone of a computer-side mobile phone that controls the mobile phone;

As an interface, you can use a single chip microcomputer to decode the binary coded ringtone of short messages (to prevent interference). If the decoding is successful, send a number to the computer first, and then turn on the relay for 0.3s；; Install a serial infrared control software on the computer, and turn it off after receiving the serial number.

Principle: When the computer is turned on, the 0.3s power-off key does not work, but when the computer receives the number through the serial port, the infrared control software executes the power-off instruction; When the computer is turned off, the serial port of the computer does not respond, but the boot action of 0.3s will turn on the computer power and turn it on.

You can make the computer play the same music repeatedly after it is turned on. Then, in a similar way, you can set the ringtone. Single-chip microcomputer can judge whether to control the incoming call of the mobile phone and connect the phone (don't use the key lock) by ringing. If you hear the music played by the computer, it is turned on, otherwise it is turned off.

Or, to monitor whether the computer is turned on, you can look at the at command of GSM, and use C language+script to let the computer automatically analyze the short message content and send the current status of the computer.

These schemes can be improved. If you are interested, please contact me.