Password protect my Hero

[Kamadev]

I don't totally like the Pattern Lock on my Hero and would like to use a regular Password or Pin to lock it.

I went to Settings - Security but the only options are for the pattern and another one for the Credential Storage Password (which I don't know what it is).

If there's any other way to set a Password or maybe an App to lock the unit (not only the apps)

Please send me an email with the info or suggestions, thanks!