Adding a new key to a normal keychain is almost always a pain. Inkey, is a smart and easy keychain, designed to take away that pain. All you have to do to add a key is insert your key into the opening of the Inkey. Removing it is just as easy: simply press the opening to lift both ends of the Inkey and take out your key. For the design we used the principle of leverage and made the curved structure (the opening) as the arm of the force. For removal, the overlap is used as the pivot of the lever to lift both ends of the Inkey after pressing.