The BAIID (Breath Alcohol Ignition Interlock Device) is a court-approved breath testing device installed on the ignition system of a vehicle. Before the engine will start, the driver blows into the device and must register below a preset threshold (typically 0.025 BAC in Illinois). The unit also requires rolling retests while driving, and has a camera that photographs the driver during each test to prevent circumvention. BAIID is required for anyone driving on an MDDP or RDP after an Illinois DUI. The driver pays roughly $85 to install, plus monthly monitoring fees around $80. Any failed test, missed rolling retest, or tamper alert is reported to the Secretary of State and can extend the monitoring period or trigger revocation.
