Samsung SCH-I100ZKAXAR - Manual (Page 92)

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Passwords
Visible passwords
Touching this setting makes passwords visible/or invisible while
you type them.
Device Administration
Select device administrators
Touching this option lets you add or remove device
administrators.
Credential storage
Use the following settings to establish, maintain, and secure
credentials storage for your phone.
Use secure credentials
When enabled, this setting requires that your phone’s functions
and Apps use stored credentials to secure data communications
(such as for E-mail and secure web sites).
Install from SD card
Touch this setting to install secure credentials from a Memory
Card, instead of from network or internet sources.
Set password
Touch this setting to set or change the secure credential storage
on your phone.
Clear storage
Touch this setting to erase all data from the secure credential
storage on your phone.