Where a site has a Blood Alcohol Concentration (BAC) Breathalyser Unit connected to the RIW System, a site block will be placed on the cardholder  where the initial breath test identifies a non-negative result which will prevent cardholder from being swiped onto site.

Immediately after the RIW System records the site block, an email is sent to the designated site contact informing them that a non-negative result has been recorded against the cardholder. The email serves as a trigger for the designated site contact to initiate a second confirmatory test, as per local requirements.

If the confirmatory test returns a negative result, the site block is removed from the cardholders profile and allows the cardholder  to be swiped onto site. If the confirmatory test comes back as confirmed positive, the designated site contact must notify the relevant Network Operator and a Network block is placed on the cardholder.