This gives me an idea for a futuristic prison where the inmates are sealed in anti-grav cells. The cells themselves hover in place and can be easily guided and moved by the touch of a hand. Therefore the prisons never get out - they simply air dock at whatever new location is required, be that a cell block transfer, shower, or exam room. Water and a food paste are injected into the cell twice daily. Both are at room temperature. There are no trays, cups, or utensils needed. The sustenance merely floats about in globules until consumed. Any waste is siphoned out through a small hose and filtration system. Liquids are purified and recycled back into the cells. The prisoners have no clothing or bedding whatsoever. The cells are generally kept pitch black and completely soundless. A dim red display flashes in each cell every 12 hours, but the occupant has no idea whether it is AM or PM. Light and audio are considered an extreme privilege that must be earned and maintained. Exceedingly rare is a display screen on which text and pictures can be shown. Because the prisoners are without any items and kept weightless, they have no way to harm themselves aside from light bruising that can come from pushing off one wall into another. Some attempt to starve themselves, which can be monitored by how much food and water are injected and extracted daily. If a prisoner begins such a regimen, the nutrient injection becomes....manual. Anesthesia is directed into the cell's oxygen feed and once the prisoner has blacked out they are removed and intravenous nutrition is administered. During this process the prisoner remains completely unconscious. When the medics feel that the treatment is at an end, the prisoner is re-inserted and awakened with no idea of how much time has passed. Automated psych evaluations - cognitive function, association, and neuro-process relays - are played every 30 days to ensure the prisoners do not mentally snap. Every 6 months a pre-recorded "face to face" interview occurs in which the projected program can evaluate and "rehabilitate" the inmate. Once per year the inmate is mildly sedated (to prevent outbursts) and electro-stimulation is administered to prevent complete musculoskeletal atrophy.
Wow. It disturbs me how easily I came up with all that based on a single image.