I am looking for a small video camera I can mount to the back of my wheelchair to help in reversing but more importantly to make sure no one is petting or feeding or otherwise interfering with my service dog. I have pretty specific features in mind - can anyone recommend a solution? My "wishlist": USB powered (I have a 4-port hub that is powered by the chair's batteries, so I would like not to have to worry about the camera going dead) iOS app for live monitoring Either an ad-hoc wifi or that fancy new Bluetooth connection to my phone. I don't want the lag of it needing a detour to the cloud, and more importantly I want this to work all the time, even if there's no wifi and the data signal is weak/overloaded (concerts, ballgames, etc) I'm pretty sure the Drop Cam Pro would have worked perfectly, but while I was still deciding if I was going to lay out $200 for this, it turned into the Nest Cam and I'm not sure if it has the same specs. I'm open to a more surveillance oriented camera like the Nest or something along the lines of a GoPro. Whatever works!