Elevator and Escalator Consulting Engineers
Elevators as Policemen
The Singapore housing authorities have installed urine detectors in certain of their elevator car cabs - principally in various subsidized low rental housing developments.
Nor do we need to stop there. We could construct high rise schools with elevators that would allow pupils to access the upper floors only if they could answer skill-testing questions posed by the elevator. Those that could not answer the questions would have to walk up. There is, as always, a down side to this. The students who were always using the stairs would become physically fitter than those who did not - which would mean that the split in our scholastic population between nerds and jocks would widen.