you have to find the door that goes with it,( is the key to open the janitors closet that will help you in a time that you need it.)
The key card is dropped at the end of the scooter chase. It is used much later in the game.
There is nothing to do with the key card immediately. Go back to the museum to find a package waiting for you. You will be leaving Counterfeit Island (temporarily) to travel to another island, for some valuable information.
It will.
you get in the boat and sink
Once you get the card you see the black widow on it and go to that house and go inside with the key and you will find the the painting and click on it then once you find the door use the card.
The key card is for later. Return to the museum, where you have a package waiting for you.
if you want keycard then go to poptropicahelp.net and do island guide
When you chase him through the streets, he jumps into a boat at the dock and drops his key card. Then you can get it.
its on the edge of the dock
When the strange man jumps in the boat he will drop it
The key card is used later in the game in the Black Widow's lair. Save the key card and return to the museum.
There is no key. Go upstairs to find the painting.