An interlock system for measuring the sobriety of a potential motorized apparatus operator is coupled to the starting mechanism of said motorized apparatus. The interlock system includes a microprocessor controlled handset, base unit and photographic device. The photographic device facilitates the identification process of the person taking the test by taking at least two consecutive pictures, one before and one during the test, which makes circumvention of the test a recordable event for later viewing by a monitoring person or facility. Further, rolling re-tests are used in the event the motorized apparatus was allowed to engage and operate and to once again verify the blood alcohol content of the person operating said apparatus and verify their identity during said test with said photographic device.