Restrict module access to unregistered visitors

[Sanis]

Hi, quick question here.
By placing this code in modules .tpl files

{if $logged}
....
{/if}

i can specify which blocks/modules will be visible to unregistered visitors. Is it correct to use, or is there more profound way?

Tnx.

[Pshopic]

Just try it, I also want to know whether it will work or not.