Does such software exist ?

[qwertywarrior]

hi guys

im looking for software that would detect a text that i have programmed before which would do a function like switching off or restarting

 

here is a scenario

im outside

my pc at home in on Logged in 

i log into steam in my phone and send a code like 34sfg32s to my steam account at home as soon at it arrives the software detects the text and switches off

[Snickerzz]

uhhh just use teamviewer http://www.teamviewer.com you can get it on your phone and then access your computer with it and close things as if you were there at your computer

[IdeaStormer]

There's also a phone app that does Remote Desktop (2X Client RDP/Remote Desktop), you will also need a Dynamic DNS for your computer (so you can get to it), then issue a shutdown command.