| 摘要 |
A keying process is provided for use in hotels or motels in conjunction with resettable room locks, so that an immediate indication is provided by the key itself as to whether it is the current key for the lock of a particular room. The key is provided with a serial number which identifies the key so that it may be grouped with its duplicates. The key is also provided with a removable plug which identifies the particular room whose lock has been set currently to accept the key. Two, or more, differently colored plugs are provided for each room, and each time the lock of a particular room is reset to accept a new key, the new key is provided with a room-identifying plug of a different color from the previous key. The key slots at the hotel or motel desk may be provided with correspondingly colored lights, or other color indicators, and the color indicator corresponding to the color of the current plug is activated for each slot. Any keys turned in to the desk which do not have a plug with the current color, instead of being returned to the slot, are sent to the maintenance center where the plugs are removed, and the keys and plugs are stored separately for future use.
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