Same here. We are creating rigs for cameras to be mounted in places that are unsafe for people or crew to be near the cameras. The locations are usually always outside (no AC) and usually involves stunts, or explosions. If we lose a camera, that is a lot easier to explain than injuring someone or worse. We set up the cameras, and we do not want to go near them again.
Using a laptop is an option i supposed, but one we want to get around, as we then have to worry about battery life on the laptop. (see : NO AC above) and adding a laptop and a series of batteries and cords, and crap really adds to the weight of the gear we are already having to carry in to these locations. Which is why my quest continues to find something small, that is not IR, that can start recording and stop recording remotely.
Thank you all, as this thread has been helpful at least in showing me other people are looking for similar features, and although there are many creative solutions out there, I just have not yet found the one that works for me.