Vocera Badge Guide de l'utilisateur télécharger pdf (Page 187)

Voiceprint Authentication ··· 187

As an added security measure, you can prevent users from erasing or re-

recording their voiceprints. To do so, revoke the Erase Your Voiceprint permission

in groups that have authentication permissions. This action prevents an imposter

from picking up a logged-in badge and erasing or re-recording the voiceprint of

the user the badge is logged in as. An administrator with the Erase Voiceprint of

Another User permission can still erase voiceprints.

Important: After users have recorded their voiceprints, they should try logging

in and out several times to ensure that they can be properly authenticated.

Troubleshooting Voiceprints

Voiceprint authentication is generally less tolerant of noisy environments and

improper placement of the badge relative to the mouth than is command

recognition. The following are some suggestions that are known to improve

authentication accuracy. These suggestions apply both to recording a voiceprint

and to logging in:

• Avoid noisy environments

• Speak distinctly and somewhat more loudly than usual when reciting the

digits

• Do not hold the badge up to the mouth while speaking

• Do not walk while speaking

• If a headset is to be used for logging in, it must also be used for voiceprint

recording

Users should record their voiceprints in the same room as the one in which they

If a user is having trouble logging in, the problem is often that the voiceprint was

not recorded properly, or simply did not “take.” In such cases, erase the

voiceprint (allowing the user to log in) and have that user re-record it.

Occasionally, someone will be able to log in immediately after recording, but

may have trouble doing so at a later time (when his or her voice has changed

slightly). Once again, re-recording the voiceprint is recommended in these cases.

Voiceprints are not foolproof. It is normal for users to have to attempt to log in

more than once on occasion. Similarly, if two users sound very much like, one

may be able to impersonate the other.

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Vocera Badge Guide de l'utilisateur Page 187