I would like to make a simple relay actuated by a bluetooth connection for opening a garage door. Answered
It would be really handy to be able to make or buy a simple switch that would turn a device on when your cellphone is within range.
You could use it to activate a garage door. Or to turn an electric door lock. Or to remote start a car. The possibilities are.... well... Numerous.
IF somebody made a device through one of the online prototypers, I would pay 50+ bucks for one of these.