Imagine a GoPro-style camera which transmitted wirelessly to a nearby smartphone. From there, the receiving app would sync it to a server ASAP. If you knew you were entering into a situation where video you were capturing might be confiscated, you could tape the phone to your thigh with a lot of duct tape. By the time the police organized themselves sufficiently to cut the tape off of your body, the important video likely would already be uploaded. Could this scheme be expanded upon by some sort of steel lock box around one's waist/ankle/etc? That would give the phone a lot of time to do its work. Furthermore, the box could contain an additional microphone which would continue recording after initial camera seizure. In cases where groups of protesters feared arrest, could Bluetooth be used to create a Tor-esque upload-to-the-cloud network which would eventually reconstitute everyone's video? I'm imagining a bunch of phones talking to each other in a mesh and trading blobs which could be reassembled server-side.