Secret folder.

[Malcolm McCallum]

Hi wamuggians , It is a senior citizen again :-0 I know I  should  
know the answer to my question but...... :-(. I want to have a folder  
in my Laptop that is ultra secure so even if I have left my laptop
on nasty people still cannot get my credit card details. The ideal  
would be a folder that needs an unbreakable code to get in, is this  
where I use the File vault? I do not want to have to open this to run  
my computer.
Mac