PsychoPass is a system that monitors citizen’s brain biometrics and calculates the ‘Crime Coefficient’ – a number that is supposed to indicate one’s propensity to commit violent crime. The system can monitor how often an individual thinks about committing a violent crime. The Crime Coefficient can increase and decrease - for example, if someone thinks about committing violent crime frequently one day, their Crime Coefficient will go up, but if they do not do so at all the next day, it will decrease.
When someone’s Crime Coefficient crosses an accepted threshold, authorities will be alerted and this individual can be apprehended. In addition, police officers’ weapons are equipped with Crime Coefficient scanners which show any target’s Crime Coefficient in real time.
For the purposes of the debate, the PsychoPass can only measure propensity to violent crime (rather than any other crimes, or any unrelated thoughts or emotions), and law enforcement cannot fabricate or alter anyone's Crime Coefficient in any way.