Breath tests with a witness.

ThinkBAC is a Bluetooth breathalyzer and an app. Every test is face-verified, time-stamped, and sent to whoever you choose: yourself, a partner, a parent, a sponsor. Add ThinkBAC Drive and the car won't start without a passed test.

$149.00 for the breathalyzer, then $39.99/month for monitoring. First 30 days free, cancel any time.

Missed test

1:00 PM test not taken. Dana was notified.

Today, 7:42 AMPassed

0.000%

Breath alcohol · limit 0.020%

Face verified

Matches the profile photo

Sent to Dana · next test 1:00 PM

One device, three ways to use it.

You choose who sees the results when you set up the app. You can change it later.

I'm monitoring myself

Test when you want proof for yourself. If you'd rather not trust tomorrow-morning you, lock your own settings and schedule so they can only change after a passed test.

I'm monitoring someone else

Set the schedule and the limit for a partner, an adult child, or anyone you're supporting. You get every result, every miss, and every fail on your phone the moment it happens.

Someone is monitoring me

Co-parenting, recovery, or a promise you made. Invite the person who should see your tests; they hold the settings, you hold the proof.

How it works

  1. Step 1

    Order online

    Pick your device and create your account at checkout. It takes about three minutes.

  2. Step 2

    It arrives linked to you

    We tie the device's serial number to your account before it ships, so the app recognizes it right away.

  3. Step 3

    Test on a schedule, or on demand

    Blow into the breathalyzer with the app open. It takes your photo, checks it against your profile, and stamps the time.

  4. Step 4

    Results go to your people

    Passes, fails, and missed tests are sent instantly to whoever you chose. The history is always there to look back on.

The car waits for a passed test.

ThinkBAC Drive is a small module installed in the vehicle. With the wireless version, a passed test on your phone is what lets the engine start; the hardwired version comes with its own wired handset and needs no subscription. Random retests while driving, a mechanic bypass you control from the app, and every start attempt logged to your history.

ThinkBAC Drive is a voluntary safeguard for families and individuals. It is not a court-certified ignition interlock.

Order ThinkBAC Drive

What it costs

Breathalyzer, one time
$149.00
Monitoring, per month
$39.99
First 30 days
Free

Monitoring starts when you activate the device in the app, not at checkout. Cancel any time from the app. Shipping and sales tax are shown before you pay.

Common questions

How do you know it's really them blowing?

The app takes a photo during every test and compares it to the profile photo. A test that doesn't match is flagged for whoever is monitoring. You can turn face checks off if you don't need them.

What happens if a test is missed or failed?

The people you chose get a notification right away, and the result stays in the history. You can set how many minutes someone has to take a scheduled test.

Can the person being monitored change the settings?

Not if someone else is monitoring them. The monitor holds the schedule, the limit, and the device settings. Self-monitoring users can lock their own settings behind a passed test.

Who can see my results?

Only you and the people you invite. You can end a monitoring link at any time from the app, and you can download or delete your data.

Does this count for a court or probation requirement?

ThinkBAC is a voluntary monitoring tool. If a court or agency has told you exactly which device to use, check with them first.

Ready when you are.

Order today and your account is set up before the box arrives.