The Bactrack Mobile & BACtrack Vio
In order to use the BACtrack Mobile or Vio you will need to download the BACtrack app from the App Store or Google play onto your smartphone. You can find it by searching “BACtrack”.
The first time you use the device you will need to pair it with your smartphone. Make sure you have Bluetooth turned on in the phones settings to do this.
Note: The best way to use The BACtrack Mobile or Vio each time is to open the app first and then turn on the device.