If one of the only actual gameplay elements of your game is using keycards to unlock doors then it might be a good idea to have an actual inventory system instead of having to awkwardly click and drag the keycards along with you as a physics object.

If one of the only actual gameplay elements of your game is using keycards to unlock doors then it might be a good idea to have an actual inventory system instead of having to awkwardly click and drag the keycards along with you as a physics object.