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The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...
Name Notes App Clip Code: Apple-proprietary code for launching "App Clips", a type of applet. 5 concentric rings of three colors (light, dark, middle). AR Code: A type of marker used for placing content inside augmented reality applications. Some AR Codes can contain QR codes inside, so that AR content can be linked to. See also ARTag. Aztec Code
Between November 2021 and February 2024, a malicious backdoor was introduced to the Linux utility xz within the liblzma library in versions 5.6.0 and 5.6.1 by an account using the name "Jia Tan". [b] [2] The backdoor gives an attacker who possesses a specific Ed448 private key remote code execution capabilities on the affected Linux system.
A printing protocol is a protocol for communication between client devices (computers, mobile phones, tablets, etc.) and printers (or print servers).It allows clients to submit one or more print jobs to the printer or print server, and perform tasks such as querying the status of a printer, obtaining the status of print jobs, or cancelling individual print jobs.
GPL and LGPL. Namespaces are a feature of the Linux kernel that partition kernel resources such that one set of processes sees one set of resources, while another set of processes sees a different set of resources. The feature works by having the same namespace for a set of resources and processes, but those namespaces refer to distinct resources.
Debian family tree. Debian (a portmanteau of the names "Deb" and "Ian") Linux is a distribution that emphasizes free software.It supports many hardware platforms. Debian and distributions based on it use the .deb package format and the dpkg package manager and its frontends (such as apt or synaptic).
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for duplex, bidirectional traffic.
.cow files for cowsay exist which are able to produce different variants of "cows", with different kinds of "eyes", and so forth. It is sometimes used on IRC, desktop screenshots, and in software documentation. It is more or less a joke within hacker culture, but has been around long enough that its use is rather widespread.