Comment by peaton

It could be a whole lot simpler than this. (And a whole less secure.) In high school I had a server running that scanned email for a keyword and my cellphone number; I didn't have a smartphone. So I texted a keyword and some code to my email. Then my server would read the email, see it contained the keyword, then interpret the rest of the code I sent and execute it. This would be insanely easy (and not too secure) to implement on Android for instance.