Keycards- Secura Key - Clamshell 50 PackNon stocking items. Non cancellable, non returnable. Description Seamless Entry With Secura Key Thin enough to fit into a wallet or purse, the Secura Key Clamshell cards are a convenient means of gaining entry to access controlled gates. These access cards are designed with a slot at one end to allow for attachment to a badge or key ring. The compatibility with Access Control Secura Key Readers allows for convenient and dependable use every time.