You have to put it in the card scanner next to the door to where black widow is :)
When you are in the Black Widow's secret headquarters, and go past the guards, there is a door with a lock requiring the Black Widow card. Press USE on the card and it opens the door to where you fight the Black Widow.
When you are in the Black Widow's secret headquarters, and go past the guards, there is a door with a lock requiring the Black Widow card. Press USE on the card and it opens the door to where you fight the Black Widow.
Enter her layer.
with the card on counterfeit you need it for the black widow's ''base"
When the Black Widow catches you , you will have to pass the guard and at top you will use your card
you use it on a strange metal door with a black widow on it i don't even know if it is a metal door but yeah, you use it on that
Use the key card to open the treasure room and battle the Black Widow. (see related questions)
You use it late in the game to reach the Black Widow in her trove of stolen art. Its use will be immediately obvious from the card-reader on a door you encounter.
Nothing right away. Eventually you get into the black widow's lair and use the card to enter her trove of stolen art.
After you get the key card, return to the museum for the package there. You will soon have the key to the Inspector's house, and the key card is used sometime later. It opens a guarded room where the Black Widow keeps her stolen art.
you go to the art musem