摘要:
A Radio Frequency Identification (RFID) tag has an electronic identification circuit coupled to an antenna, wherein the RFID tag is arranged to communicate with a RFID tag reader via the antenna, using RF energy. The tag comprises means sensitive to light (such as a photodiode, phototransistor, photocell or a solar cell) for controlling (in particular inhibiting) communication between the RFID tag reader and the RFm tag. The tag can for example be embedded in or on a high-value object such as a banknote. The existence of the banknote cannot be detected e.g. by criminals in the absence of light (e.g. while the banknote is located in a wallet), but the authenticity of the banknote can be verified in legitimate use.
摘要:
Authentication verifying for an object to be certified is carried out. An authentication verifying chip in which authentication verifying information is stored is mounted non-removably on a certificate. A confirmation chip in which the authentication verifying information is encrypted by a crypt key of a certificate issuer and is stored is mounted non-removably on the object to be certified. When verifying the authenticity of the object to be certified, the encrypted authentication verifying information in the confirmation chip is decrypted by the crypt key of the certificate issuer, and it is compared to the authentication verifying information in the authentication verifying chip.
摘要:
A Radio Frequency Identification (RFID) tag has an electronic identification circuit coupled to an antenna, wherein the RFID tag is arranged to communicate with a RFID tag reader via the antenna, using RF energy. The tag comprises means sensitive to light (such as a photodiode, phototransistor, photocell or a solar cell) for controlling (in particular inhibiting) communication between the RFID tag reader and the RFm tag. The tag can for example be embedded in or on a high-value object such as a banknote. The existence of the banknote cannot be detected e.g. by criminals in the absence of light (e.g. while the banknote is located in a wallet), but the authenticity of the banknote can be verified in legitimate use.
摘要:
Currency or other documents or items of value containing a liquid crystal/photovoltaic device which produces a coded display in response to artificial or ambient light. Such a device functions both as an anti-counterfeiting deterrent and also as a means for permitting the man-in-the-street easily to authenticate the validity of a document containing such a device.
摘要:
Authentication verifying for an object to be certified is carried out. An authentication verifying chip in which authentication verifying information is stored is mounted non-removably on a certificate. A confirmation chip in which the authentication verifying information is encrypted by a crypt key of a certificate issuer and is stored is mounted non-removably on the object to be certified. When verifying the authenticity of the object to be certified, the encrypted authentication verifying information in the confirmation chip is decrypted by the crypt key of the certificate issuer, and it is compared to the authentication verifying information in the authentication verifying chip.
摘要:
An identification card with interior circuits, including memory means, for use in a credit or identification system, into which the user enters a "secret" number and then the input gate to that part of the memory means is destroyed for security purposes.