This is a dedicated app for the safe driving support system Al-RollCall by MIRAIt Service Design Co., Ltd.By linking with a compatible breathalyzer and sending the measurement results to the cloud, it is possible to manage the results of the pre-ride roll call.This app requests permission for Bluetooth connection in order to link with the alcohol checker. Permission for Bluetooth connection may be displayed as "Obtain location information" depending on the smartphone model. As a result, this application will not acquire current location information such as GPS.