KEYCARD AND KEYCARD-LOCK
To acquire a keycard, the creation of whose clone is impossible, and a keycard-lock that is locked/unlocked by the keycard. Key information constituted by randomly disposed metal granules, fiber pieces, a hologram chip, fluorescent substance granules, radioactive substance granules, or iridescent material, which is obtained by chance, is provided to a card. By inserting the keycard into the keycard-lock, and storing data based on the key information of the keycard in the keycard-lock, the keycard is registered in the keycard-lock. The data is encrypted by using a crypt key stored in the keycard-lock. By comparing the data of keycard inserted into the keycard-lock and the data obtained by decrypting the encrypted data registered in the keycard-lock, the keycard-lock is locked/unlocked. In addition, data based on the information of the keycard is encrypted and stored in a self-certifying keycard information chip installed in the keycard.
1 . A keycard/keycard-lock system comprising a keycard including a card to which three-dimensional key information randomly formed on a surface is non-removably provided, and a keycard-lock which is locked/unlocked by said three-dimensional key information of said keycard.
2 . The keycard according to claim 1 , said three-dimensional key information comprising metal granules mixed at random positions in a transparent medium.
3 . The keycard according to claim 1 , said three-dimensional key information comprising fiber pieces mixed at random positions in a transparent medium.
4 . The keycard according to claim 1 , said three-dimensional key information comprising pits on hologram formed at random positions.
5 . The keycard according to claim 1 , said three-dimensional key information comprising fluorescent substance granules mixed at random positions in a transparent medium.
6 . The keycard according to claim 1 , said three-dimensional key information comprising iridescent pieces mixed at random positions in a transparent medium.
7 . The keycard according to claim 1 , said three-dimensional key information comprising droplets of iridescent material disposed at random positions.
8 . The keycard according to claim 1 , said three-dimensional key information comprising a layer of iridescent material spread unevenly.
9 . The keycard according to claim 1 , said three-dimensional key information comprising iridescent pieces mixed at random positions in a transparent medium.
10 . The keycard according to claim 1 , said three-dimensional key information comprising radioactive substance granules disposed at random positions.
11 . The keycard according to claims 4 , 5 , 6 , 7 , 8 and 9 , wherein said three-dimensional key information includes multicolored information.
12 . The keycard according to claim 1 , wherein the card is housed in a container with a shutter.
13 . The keycard according to claim 1 , further comprising a self-certifying chip, wherein encrypted data of said three-dimensional key information is stored in said self-certifying chip.
14 . The keycard-lock according to claim 1 , wherein the key information being three-dimensional and at a random position on said keycard is registered, and when the registered three-dimensional key information is read, the keycard-lock is locked/unlocked.
15 . The keycard-lock according to claim 14 , wherein said three-dimensional key information is encrypted and registered.