Reward more/less anonymous people for watching security footage in basically real time to catch shoplifters and report other incidents. An average large store with 20 cameras would produce 30.4k hr / month, which could be reduced with algorithms. Say $1k USD / month would be a reasonable charge if it could shown that it saves this much with loss prevention.
Is anyone doing this? What are the sales barriers, issues in this space?
Edit: Similar, but different compared to https://schneier.com/essay-327.html