The document describes a software architecture block diagram for a smart driver application. It includes modules for sign in/sign up, GPS, push notifications, trips, and settings. The sign in/sign up module allows users to log in with credentials or sign up with personal and official information. The GPS module fetches location and speed data from the GPS API. The push notifications module triggers notifications based on events detected by the business logic module. The trips module periodically updates trip data to the mobile database. The settings module allows users to update their settings, which are then reflected on their device.