Once you have rescued all three spies, you will have special glasses that can let you see lasers. When you go to the B.A.D. hideout to the right of Toupee Terrace, you will need the fingerprint to open the scanner lock.
When you reach the rooftop door, the fingerprint glass will automatically display. Slide it left and right and you should trigger the door.
To go through a building in the way right of the island.
you do not give it to anyone you go to the B.A.D site and pass the lasers and use it for the fingerprint code.
fingerprint
In the final building when you are reprogramming the computers. you use the fingerprint to get into the building.
you don't have to. you just need the fingerprint.
From the agent in the B.A.D. Bistro. Get the job there as a chef and then get his wine glass (with his fingerprint). Sneak out through the kitchen vent and across the light fixtures.
The glass is for the B.A.D Control Center when you need to break in there. It has a fingerprint-only code.
When you use the glass chalice like cup at the laser areas.
You need to go to the chef, then play the simple game, then get the fingerprint.
There is only one Fingerprint, which you get from the wine glass of a BAD bigwig at the BAD Bistro. (when you use the fingerprint, slide it left and right at the door) (see related question)
There is no key on Spy Island. The "vault" holding the first spy has a large hole in its ceiling. The door at the BAD hideout (satellite control station) is opened using a fingerprint from the BAD Bistro. (see related questions)
you use it for the bad agents place there you have to dodge alot of lazers and defeat director.D