positive identification (of a target) (PID)

positive target

proportional-integral-derivative (PID)

proportional–integral–derivative controller (PID controller / three-term controller)

positive buoyancy

positive muzzle brake

positive reactive-type muzzle brake

positive-passive muzzle brake

positive-type muzzle brake

positive culture

positive safety culture

positive source

positive stability

positive intelligence

positive intelligence quotient (PQ)

target identification

target identification control

target scattering crossover / target scattering cross-section / electronic target profile

aerospace vehicle identification

automated identification technology (AIT)

automatic identification system (AIS)

force identification

identification beacon

identification card (identity / ID card)

identification operator

identification tag; ID tag; (slang. dog tag)

item identification (logistics)

national identification means

radio frequency identification (RFID)

recognition and identification system

registration / identification number

sampling and identification of biological, chemical and radiological agents (SIBCRA)

square identification