Sorry, I don't know if this has been discussed before but here's the scenario.
I just figured out that I could send a command to disarm my alarm system. So I'm gonna set up the Location from IFTTT and send me an email (or event) to trigger this command and maybe turn on light and some other stuff. Say me and my wifey both set this up, how can I tell VC not to repeat the event or command twice ? What is the best way to go about this?