Keycard is a document - keep it in a secure and safe place
Keycard is a card the size of a business card where the lock vendor writes the keycode, number of keys, and the card's issue date.
The lock's owner can have additional keys made by simply showing the card to the key duplicator.
If the keycard is lost, it is forbidden to make duplicates of the keys, and the lock cylinder must be recoded for security purposes.
Whenever the key is lost or changes owners (for example, a new tenant moves into the apartment), the lock cylinder must be recoded or keyed again to avoid security risk - the lock no longer opens with old keys, only with new ones.
If you wish to have a duplicate made, bring the key and also itskeycard to the lock store.