2.Touch Make passwords visible to enable or disable brief displays of password characters.

When enabled, a check mark appears in the check box.

Device Administration

To add or remove device administrators:

1.From a Home screen, touch Apps ➔ Settings

➔ Security.

2.Touch Device administrators.

Enable or disable installation of applications from sites other than Google Play.

1.From a Home screen, touch Apps ➔ Settings

➔ Security.

2.Touch Unknown sources.

An informational pop-up displays.

3.Read the message and touch OK to allow installation of non-Google Play applications.

When enabled, a check mark appears in the check box.

Warning! Enabling this option causes your tablet and personal data to be more vulnerable to attack by applications from unknown sources.

Credential Storage

Trusted Credentials

If a certificate authority (CA) certificate gets compromised or for some other reason you do not trust it, you can disable or remove it.

1.From a Home screen, touch Apps ➔ Settings

➔ Security.

2.Touch Trusted credentials.

The trusted credentials screen has two tabs:

• System: Displays CA certificates that are permanently installed in the ROM of your device.

• User: Displays any CA certificates that you installed, for example, in the process of installing a client certificate.

3.Touch a CA certificate to examine its details. A scrolling screen displays the details.