Blink Time is a free Android app designed for building cleaners and service providers to track their work hours. The app uses an object-oriented time tracking system where each user has to log in with their personal Blink ID card, which can be scanned using a QR code without the need for a password.

To start tracking their work hours, users simply need to press the "Start" button and scan the location's QR code. The app will then record the start time and the location of the user. Employees can easily check their personal work hours in the app's work time list.