I'd like to be able to open my garage door from my phone. Maybe go to a website or send an SMS. To send an SMS, I was thinking I could do a direct twitter message using their SMS gateway. I could use one of those IoT modules that can be programmed. It could check my twitter account for a direct message.
I'm wondering if anyone has done something like this and what they would recommend. I have a GSM shield, but I don't want to have to have an active wireless account.