G - Physics – 08 – B
Patent
G - Physics
08
B
340/147
G08B 21/00 (2006.01) G01N 33/497 (2006.01)
Patent
CA 1316580
APPARATUS AND METHOD FOR AVOIDING CIRCUMVENTION OF AN IDENTITY CONFIRMING BREATH TESTER Abstract Of The Disclosure A breath sobriety test system (i) deters circumvention of a test having an alcohol measuring phase and an identification phase. In the alcohol measuring phase, the alcohol content of a breath sample delivered by an operator/test subject is measured in the conventional manner according to the electrical output signal of an alcohol sensor (200). In the identification phase, the operator/test subject confirms his or her identity as a designated individu- al by performing an identity-confirming act recogniz- able by the system. The identity-confirming act includes delivering breath to the system. The response of the alcohol sensor (200) to the breath delivered in the identification phase is compared with the reading taken during the alcohol measuring phase. If the two readings differ by more than a predeter- mined amount and in particular if the identification phase reading exceeds the alcohol measurement phase reading by more than said amount, the test is not passed regardless of whether the alcohol measurement is otherwise acceptable and regardless of whether the identity-confirming act is performed correctly.
606758
Guardian Interlock Systems Corp.
Smart & Biggar
LandOfFree
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