Can you lock hidden folder
Is it possible to password protect a hidden folder?
iMac (21.5-inch Mid 2011), Mac OS X (10.7.2)
No, but you can limit the access that other users of your computer have to a folder. Right-click (option+click for trackpads) the folder and select 'Get Info' from the menu. At the bottom of the 'Info' box, you should see something like this:
If you are an administrator, you can click the lock icon, authenticate, and then change permissions for the user groups displayed on the pane (mine have been redacted in the screenshot). Hope that helps!