To use the Barcode Scan App, you need to grant the app access to your administration in Exact Online. You assigned these permissions when registering the app. When you no longer use the app, you can revoke the permissions so the app can no longer access your data in Exact Online. With the steps below, you can revoke these permissions.
To revoke the permissions, go to Exact Online and click on your name in the top right corner and then on My Exact Online:
Then choose the Security Centre on the left side of the menu:
Then scroll down and find the Barcode Scan App:
To revoke the permissions, press the Revoke button. The revocation takes effect immediately.