After you find the card key you have to open the locked doors and when you go in some circle you find your rival and some other person who gives you a Lapras, battle your rival and then go into the other circle near your rival and that is the floor where you have to battle Giovanni
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.
okay first you go to
go tothe fifth floor go down and round and you will find a card key goto floor 3 and use card key use the teleport and teleport again then useyour key card
He's on the seventh floor you need the card key to get to him, go to floor 3 use the card key on the left door next to the rocket then go to the portal you should find gary.
To get the card key in Pokémon Fire Red you need to go the 5th floor in the Silph Company. You will find the card key after defeating the Team Rocket members.
Go to F5. go all the way down. you will see a member of Team Rocket standing beside a teleporter. Step on the teleporter. Once you have teleported to different room (with a scientist in it) step on the SAME teleporter that you came from to return. Go right and you will find the card key.
You go to the Underground area of Goldenrod and go to the door that was locked. Then you save the Director of the radio station.
Not sure but if you mean in goldenrod city you need to find the director and he gives you a key card. Then go to the radio tower and go to 3F there is a place you put the key card in. Then you defeat loads of team rocket people and you will find a lift go up and there he is. Hope this helps :P
It is used at the very end of the island. When you find it, hold onto it and go back to the museum, where you have a package waiting. (The key card opens a trove of art stolen by the art thief known as the Black Widow.)
Where to FIND the key card in Pokemon platinum was your question right ? well I looked for it on my game but couldn't find it. I think you mean galatic card,secret key. Secert key: location wifi galatic key; get it in building when battling someone
Go to pallet town and then you use surf in under prof oak house.
To get the card key you go to the 5th floor at Silph Co get off the elevator go left, but not in the room with the scientist. Go down the hall and stay on the left go on the pad step off and step back on, go right and the card key is right there