There are still four layers of security: presentation of valid government ID, boarding pass, x-ray inspection of carryon luggage, and passing through a magnetometer for the presence of metal.

FORBES: For Some Fliers TSA Security Lines Just Got Much Shorter

The TSA is required to insert a Notice of Inspection card whenever your luggage is hand searched, but writing personal notes, while not unprecedented, is probably frowned upon by supervisors.

FORBES: TSA Agent Gropes Most Intimate Parts of Woman's Luggage