Android mobile computers with built in laser scanners....
The Google app store requires an account and email address. This should be entered by the store.
The scanner app is preloaded or can be downloaded from Google Play, Use it to turn off scan sound and expand UPC-E to UPC-A or make other symbology settings.
>Scanner App >Gear icon >Symbology Settings
Android settings on the mobile device work the same as they do on phones, use them to turn off sounds and vibrations.