Abstract: Methods and apparatus allow for passive determination of a driver's Breath Alcohol Concentration (BrAC). Alcohol concentrations can be determined from exhaled breath, however inconvenience to a driver is often a barrier for incorporation of BrAC sensors into vehicles. The methods and apparatus allow for passive determination of a driver's BrAC, while detecting and accounting for a wide range of environmental conditions that may reduce the accuracy of a passive BrAC reading.

Abstract: Methods and apparatus allow for passive determination of a driver's Breath Alcohol Concentration (BrAC). Alcohol concentrations can be determined from exhaled breath, however inconvenience to a driver is often a barrier for incorporation of BrAC sensors into vehicles. The methods and apparatus allow for passive determination of a driver's BrAC, while detecting and accounting for a wide range of environmental conditions that may reduce the accuracy of a passive BrAC reading.

Abstract: Methods and apparatus allow for passive determination of a driver's Breath Alcohol Concentration (BrAC). Alcohol concentrations can be determined from exhaled breath, however inconvenience to a driver is often a barrier for incorporation of BrAC sensors into vehicles. The methods and apparatus allow for passive determination of a driver's BrAC, while detecting and accounting for a wide range of environmental conditions that may reduce the accuracy of a passive BrAC reading.

Abstract: The invention relates to a distributed system (1; 11; 21) for access control and sobriety testing comprising an authorization control and sobriety testing station (2; 12; 22; 32), which obtains authorization data and a bodily signature sample from an individual seeking access, a central control unit (3; 13; 23; 33), which, if there is a positive verification of the authorization data and no detection of alcohol in the bodily signature sample, issues temporary authorization information, and at least one access control unit (4; 14; 24), which obtains the temporary authorization information and, upon a positive verification of the temporary authorization information, grants access to the individual who is seeking such access.

Abstract: The invention relates to a distributed system (1; 11; 21) for access control and sobriety testing comprising an authorization control and sobriety testing station (2; 12; 22; 32), which obtains authorization data and a bodily signature sample from an individual seeking access, a central control unit (3; 13; 23; 33), which, if there is a positive verification of the authorization data and no detection of alcohol in the bodily signature sample, issues temporary authorization information, and at least one access control unit (4; 14; 24), which obtains the temporary authorization information and, upon a positive verification of the temporary authorization information, grants access to the individual who is seeking such access.

Abstract: A system for authorization control and breath testing, comprising a management system unit and an authorization control and breath testing unit, wherein the authorization control and breath testing unit is configured to grant authorization to an individual seeking authorization without having access to any personal identification information about that individual.

Abstract: Methods and apparatus allow for passive determination of a driver's Breath Alcohol Concentration (BrAC). Alcohol concentrations can be determined from exhaled breath, however inconvenience to a driver is often a barrier for incorporation of BrAC sensors into vehicles. The methods and apparatus allow for passive determination of a driver's BrAC, while detecting and accounting for a wide range of environmental conditions that may reduce the accuracy of a passive BrAC reading.

Abstract: A system for authorization control and breath testing, comprising a management system unit and an authorization control and breath testing unit, wherein the authorization control and breath testing unit is configured to grant authorization to an individual seeking authorization without having access to any personal identification information about that individual.