once you get past the guards and bounce up onto the chair, there is a card swipe where you go to your items, click on use for the card, and it lets you in.
Later in the game you'll go to the "Black Widow's" lair. That's where you'll use the keycard :)
it is located in the black widows lair
hi there mr
You do this near the end of the game, when you are in the lair of the Black Widow.
Nothing right away. Eventually you get into the black widow's lair and use the card to enter her trove of stolen art.
He went off to the black widows lair .
You'll need it later on to get into Black Widows' Lair.
go to downtown then to country side and keep walking and there it is
If you are referring to the keycard in Poptropica Counterfeit Island, you use it to unlock a door in the secret lair, which can be found in the countryside. It is locked so you have to find a key.
It open the Black Widow's secret treasure trove in her lair. You don't use it when you find it. Return to the museum where a package is waiting for you.
In the Black Widows lair under the floor, but you have to peel back the painting on the second floor of the house you need the key to.
You don't, its just something useless in the background you can click on, i suggest you click on the peeling painting, then you find yourself tied up with the same person who framed you, lucky.