Pre-boot interface navigation can be complemented by a series of system audio beeps to ensure that visually-impaired users can successfully authenticate.
Note
Drive Encryption adds 508 compliance system beeps to UEFI. For details, see KB69853.
Click → → , then select a group from the System Tree.
Select a system, then click → → to open the Policy Assignment page for that system.
From the Product drop-down list, select Drive Encryption 8.x. The policy categories under Drive Encryption display the system's assigned policy.
Select the Product Settings policy category, then click Edit Assignments to open the Product Settings page.
If the policy is inherited, select Break inheritance and assign the policy and settings below next to Inherit from.
From the Assigned Policy drop-down list, select the policy, then click Edit Policy to open the Policy Settings page.
From this page, you can edit the selected policy, or create a new policy.
On the Boot Options tab, select Always enable pre-boot USB support to enable USB on the client system. Make sure that you also enable the Enable Accessibility option under Log On | Drive Encryption.
Click Save on the Policy Settings page, then click Save on the Product Settings page.
Send an agent wake-up call.
When the user tries to authenticate on the client system after enforcing this policy, the user can listen to the beep audio guidance in the pre-boot environment.