Abstract: A self-policing system for preventing oneself from drunk driving features a key for inserting into an ignition switch of an automobile and a base. A base anterior end features a keyhole for receiving the key. A barbed first key camp is operatively connected to a first solenoid located in a base anterior cavity and is biased via a first spring. A barbed second key clamp is operatively connected to a second solenoid boated in the base anterior cavity and is biased via a second spring. A base posterior end features a breathing aperture located on a tip. A base posterior cavity features an alcohol sensor and a power supply each operatively connected to a microprocessor.