If AI based robots and humans were the only heat producing macro organisms how would the AI detect and thus humans avoid detection?
The only things humans do in this setting is be mass produced and put in a fight pit as well as return to their cells to recover. Food and water is given to them via nutrients injections and all food, waste, reproducing, and cleaning are taken care of by machines.
The only areas they would have as background to distinguish from would be a metallic grey and the brown/green farming area.
In traditional facial detection it is often avoided with the application of non organic often colorful shapes as face paint, but this appeals to a cityscape with things such as traffic signs that would not exist in this setting
on an additional note, how would they be able to determine living from dead for clean up? and if magical regeneration is possible, would self mutilation be an effective strategy to avoid recognition or at least detection in terms of being singled out from the group?
I am dealing with hard robots here in the sense that they can't develop emotion or sentience or anything simply following code.