How it works:


An embedded, high-resolution camera takes a picture of the participant during the breath alcohol test.


Each photograph is spatially analyzed by the Adaptive Facial Recognition™ software against an adaptive template of multiple participant photos on file:

  • As a result, this technology adjusts to subtle appearance changes over time (facial hair, weight gain/loss, etc.).
  • Other software compares against only one single master file photo and limits the capability of the facial recognition, making it more prone to unsuccessful matching and/or false positives or negatives.


Each test photo is saved in the client’s file, where it can be reviewed at any time:

  • Other systems utilize complicated systems, such as pulse and breath print biometrics, that require a technical algorithm for identification, but offer no confirmation tools for the officer– creating an unknown false acceptance and/or false rejection rate. With SL2’s Adaptive Facial Recognition™ software, confirmation tools, such as saved photographs, can be visually confirmed.


This technology substantially reduces the workload of manually verifying participant photos, while increasing system accuracy.

Adaptive Facial Recognition

How Does it Work?

SL2 Advantages:


•   Convenient portable testing

•   Completely automated

​•   Real-time test results and alerts 

What is SL2?


The SL2 offers a new approach to alcohol monitoring. Where the term alcohol monitoring is frequently associated with urine testing or an alcohol ankle bracelet; SL2 is the first truly portable, convenient, and discreet alcohol monitoring solution.  SL2 has a proven track record in Criminal Justice and Addiction Treatment with a presence in all 50 states and Canada.

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Adaptive Facial Recognition™ Technology Ensures Accurate Monitoring


The portable Breathalyzer collects a deep-lung breath sample to measure Breath Alcohol Concentration, while simultaneously taking a photo of the individual to confirm their identity. The device wirelessly submits the test results to a cloud-based monitoring website where instant alerts can be set up to notify contacts if there are signs of a relapse.

Fighting Addiction by Monitoring Accountability.

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