The Android biometric device is a portable, handy device which works automatically using facial and fingerprint scanning. If your work environment requires mobility, it would be a better option compared to a fixed-location device. 

The Time Log by B3Networks app can be downloaded for free from the Google Store but you have to purchase a Time Log subscription.

First, open the mobile app on your Android phone or the biometric device to get an Authorization Token.

 Second, you need to log into your account and open Time Log to register biometric devices and set checking rules. 

Then your staff scans their finger on the device during check in/out and the data will be synced into the system.

Constant Internet connection is not necessary. Check In/Out data will first be stored in the Android biometric device or other Android devices. Once Internet connection is detected, it will automatically transfer the data to the cloud for storage.