I offer to organise a company that could provide their service in the field of tight as a brick people evacuation. Such company could earn great money just using drunken people. People just receive a bio-card and make a contract with this company. A bio-card supplied with a diagnosis system scans an organism, to say, every 20 minutes and in case if it detected that a person is drunk, a bio-card sends a SOS signal to company's server. A bio card also should send a location where from the company's workers should take off a drunken person. A payment could be made via credit card or make payments beforehand. I think it would be very comfortable for those café-holders who really don't know what to do with a drunken client.