The PrePass app gives carriers the option to expand bypass opportunities using tablet or mobile phone devices, and may be used with a PrePass transponder. The PrePass weigh station bypass app provides expanded coverage to enforcement locations without a transponder reader and mobile sites. It also provides expanded functionality including PrePass ALERTS. The application is available on Apple iOS, Android, and select telematics and ELD devices. If you have a transponder, then the PrePass app will default to the transponder message when PrePass transponder infrastructure is present at the weigh station.