There will be no difficulty equipping people in minimum wage jobs with cameras. You could probably even get companies to pay to give you training data, if you sell it as an AI-powered system for reducing shrinkage or avoiding liability. The most likely source of pushback (that companies will care about) is likely to be from customers interacting with people wearing cameras, so it might be limited to non-customer-facing roles.

Another good source of data would be exoskeletons, though I don't know that any of those have actual seen real commercial success yet.