The idea came from one of our team members. He had the idea of having an app that can check if someone who might be driving home from a friend's place or a bar might have had one too many.
In addition, a few of our team members are relatively new to coding and the Android platform, so this project was a good way to introduce them to designing UI and handling input from data sensors, such as the accelerometer, as well as Android in general.
It's geared towards users who may be coming home from a friend's place or a bar, or a concerned friend who hands their phone to the user. It uses the accelerometer of the phone to detect if the user is moving around too much when he's walking in a straight line. If the person moves around too much when walking, then the app informs them that they're drunk and suggests a taxi number to call.