I have never been patted down, or put in a double sided mirror room ever. If you are just there for an employment screening, you should never have to deal with it either. They have always just put me in a bathroom, said no flushing the toliet, no washing your hands, and let me do my thing.

If you look around at QuickSilver's thread about Quick Fix, you will find a decent bit of information on how to use the product.