http://bits.blogs.nytimes.com/2013/05/26/disruptions-at-odds-over-privacy-challenges-of-wearable-computing/?ref=business
It seems people on both sides of the issue are extremely passionate about their stand point. Could get very interesting both in general and in this industry as has already been discussed on CERB
http://www.cerb.ca/vbulletin/showthread.php?t=134350&highlight=privacy