If Someone unwantedly naps during the day. Is there any feasible way to detect them and send out an alert to wake him up?
Regarding The specifics: I meant if a student just unwantedly napped on his desk; could there be an wearable device that detects that within a small time frame (like 5-10)m and send an alert to wake him up? It just has to be practical; so 'technical' stuff costing millions is not an option