This application connects with BChat (a ble breathalyzer device) using wireless BLE technology and measure the blood alcohol concentration using the semiconductor sensor in the device, the accuracy is up to +/- 0.02% Blood Alcohol (BAC). User can check their BAC level as a reference before driving.
Between device owner, they can register a chat account to communicate with each other.
note: Although the device has a reliable accuracy, it is not a medical device, please consult professional advise if needed.