FUSAR Mohawk is working on a new helmet cam concept on Indiegogo. Slim design, waterproof, bluetooth, black box recording, emergency contact if crashed, stills and video, can move it from helmet to helmet. Looks good and it already reached it's initial goal. I wonder about the emergency contact, that looks like a good feature.
http://igg.me/p/fusar-mohawk-make-any-helmet-smart/x/12860782
http://igg.me/p/fusar-mohawk-make-any-helmet-smart/x/12860782