Patent ID: 8803656

Claim:
A card-type electronic key provided with an emergency mechanical key, for use with a communication controller arranged in a subject remote from the card-type electronic key, the card-type electronic key comprising: first and second card regions forming a planar card body; a communication circuit unit embedded in the first card region, including an electronic key transceiver circuit which transmits a wireless signal including an authentication code and which provides backup power for the card-type electronic key, in which the communication circuit unit is allowed to control an external device arranged on the subject when the communication controller receiving the wireless signal determines that the verification code is authentic; a verification code pattern in the second card region, formed by a plurality of through holes or a plurality of recesses extending in a thickness-wise direction of the second card region; and a concealment film which is removably adhered only to the second card region and which conceals the plurality of through holes or the plurality of recesses so that the through holes or recesses cannot be seen, wherein after the concealment film is removed from the second card region, the second card region functions as a key blade of the emergency mechanical key while the first card region functions as a key head of the emergency mechanical key.