Dispersion Toilet

A dispersion toilet is a toilet that converts urine and feces directly into energy that goes into the power grid. They have safety controls so that they'll turn off or reject matter before dissolving living flesh, but these controls are surprisingly easy to remove.
People still use paper to wipe.
The common toilet of 2230's safety measures are set to recognize the composition of anything that tries to enter them. Typically these are set to reject anything that is not urine, feces or toilet paper. Such objects will bounce off the field, as it will turn upon recognition from a dispersion field into a repulsion field.
The recognizer is actually one of the most advanced, though reliable systems on Earth as of 2230. Because fecal matter contains all kinds of bacteria and maintains human body warmth for a moment after it departs the body, it would normally register on most scans as living organic matter. Thus a great deal of experimentation had to be done to separate feces from proper human tissue, and other substances that may fool the system, such as Shinola Shoe Polish. The shit detector functions with 18 different aspects of fecal detection, including bacterial proliferation, lack of pulse, exuded particulate matter, and several advanced lipid and cellular detectors that can not only determine what kind of crap you’re disposing of, but diagnose most gastrointestinal problems before they become serious. 
The history behind the toilet safety measures is not all flawless however. The first series of Disperse-O-Matic Electircal Field Toilets by Duravit Jr. lacked vomit recognition, resulting in the great backspray of 2201. Similarly, the Toto brand Fec-Ease Movement Annihilator failed to meet the TSM-IV (Toilet Safety Measure 4) fecal diagnostic manual of 2204 and could not recognize cohesive andropogonic particles and superheated any such corn bits until they popped, resulting in many surprised customers as they defecated only to find their rumps battered by popping pop-corn.
But in general, by 2230 the safety measures are flawless and nobody has reported a problem with them since 2228 when Richard Leicester Lester of Baton Rouge tried to throw out some dryer lint in a Plunkett Logjam 6000 and produced a smoke cloud that made him cough for half an hour.
== Spoilers ==
Violet uses one to dissolve Hrothgar's head.
== Behind the Scenes ==
The technology is straight out of Asimov's Foundation series, as is the mention of an ozone smell when used.
Category:Technology