Zebra DataWedge Scanning and feedback

Building an inventory checkin app.

How can I give user feedback when an item has not been found in the database?
Retool Mobile does not allow audio or vibration feedback or alert for user to stop and look at the screen. Additionally, retool does not allow to broadcast back to Zebra's DataWedge to turn off the scanner.

Any direction or idea would be appreciated.

Thanks,
Rasheed