TL;DR: In this article, a universal key blank is used to duplicate a master key by measuring and reproducing a reference distance defined by the spacing between the bit notch pattern and the key reference surface forming the first groove of the master key.
Abstract: A universal key blank incorporates special geometry enabling it to be used as a blank for duplicating a variety of related but geometrically dissimilar keys. The universal key blank functions with a lock having a lock entrance slot with opposing sides and first and second opposed key interface ribs protruding from the sides of the slot with relative vertical alignment to rib geometry configured to engage first and second grooves formed in opposing sides of the blade of the universal key blank. A novel method duplicates keys by measuring and reproducing a reference distance defined by the spacing between the bit notch pattern and the key reference surface forming the first groove of the master key.
TL;DR: In this article, a method and application provide a universal key code for use when a key is lost and the code can be taken to a locksmith or retailer for duplication, and the software application can output, from a picture of an original key, the key blank and key cut code to allow a consumer to simply and conveniently obtain a duplicate key.
Abstract: A method and application provide a universal key code for use when a key is lost. The code can be taken to a locksmith or retailer for duplication. The user can take a picture of their key and a software application can extract unique key geometries from the key, via, for example, edge detection technology and/or other mathematical methods, digital image processing methods and standard image processing methods. A key code can be determined from this extracted information and mapped to a known key code database. The software application can output, from a picture of an original key, the key blank and key cut code to allow a consumer to simply and conveniently obtain a duplicate key.
TL;DR: In this paper, the authors proposed a scheme to secure the safety of information by holding a master decoding key only by a receiver in secrecy, and holding an enciphering key by a transmitter that is an owner in secrecy.
Abstract: PURPOSE: To secure the safety of information by holding a master decoding key only by a receiver in secrecy, and holding an enciphering key only by a transmitter that is an owner in secrecy. CONSTITUTION: The safety can be maintained even when the length of a key is compressed by keeping both individual enciphering key and decoding key in secrecy from a person other than the transmitter and the receiver. In other words, in case of constituting a master key of 10 prime numbers of binary 20 bits and an individual key of 5 prime numbers out of them, no master key can be estimated until all of the remaining 5 prime numbers except for 5 prime numbers of the individual key are found. Around 2 16 prime numbers exist within the integer of binary 20 bits, and a combination in which five of them are taken goes to 2 16 C 5 , and it is impossible to calculate all of the cases judging from calculation amount point of view. Furthermore, even if all of the prime numbers are known, it is hard to know the master key judging from the calculation amount point of view without recognizing respective individual key. COPYRIGHT: (C)1989,JPO&Japio
TL;DR: In this article, a method and application provide a universal key code for use when a key is lost and the code can be taken to a locksmith or retailer for duplication, and the software application can output, from a digital image of an original key, the key blank and key cut code to allow a consumer to simply and conveniently obtain a duplicate key.
Abstract: A method and application provide a universal key code for use when a key is lost. The code can be taken to a locksmith or retailer for duplication. The user can obtain a digital image of their key and a software application can extract unique key geometries from the key, via, for example, edge detection technology and/or other mathematical methods, digital image processing methods and standard image processing methods. A key code can be determined from this extracted information and mapped to a known key code database. The software application can output, from a digital image of an original key, the key blank and key cut code to allow a consumer to simply and conveniently obtain a duplicate key.
TL;DR: In this paper, the authors propose a universal key performance indicator engine for the Internet of Things (IoT), which includes a control logic section, a mining logic section to mine for device factors, network factors, and/or application factors associated with a subset of devices within the IoT.
Abstract: Embodiments include a universal key performance indicator engine associated with an Internet of Things. The universal key performance indicator engine can include a control logic section, a mining logic section to mine for device factors, network factors, and/or application factors associated with a subset of devices within the Internet of Things, and a universal key performance indicator logic section to generate a universal key performance indicator associated with the subset of devices based at least on the mined factors. The universal key performance indicator can be transmitted to a remote server and/or to an administrator of a network. When the universal key performance indicator crosses a predefined threshold, an alert or recommendation can be made to improve the operability, security, and performance of devices within the Internet of Things.