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  2. Product key - Wikipedia

    en.wikipedia.org/wiki/Product_key

    A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters. This sequence is typically entered by the user during the installation of computer software, and is ...

  3. Serial number - Wikipedia

    en.wikipedia.org/wiki/Serial_number

    A software serial number, otherwise called a product key, is usually not embedded in the software but is assigned to a specific user with a right to use the software. The software will function only if a potential user enters a valid product code. The vast majority of possible codes are rejected by the software.

  4. List of commercial video games with available source code

    en.wikipedia.org/wiki/List_of_commercial_video...

    In January 2019 Jason Scott uploaded the source code of this game to the Internet Archive. [92] Team Fortress 2: 2007 2012 Windows first-person shooter: Valve: A 2008 version of the game's source code was leaked alongside several other Orange Box games in 2012. [108] In 2020, an additional 2017 build of the game was leaked. [229] Tempest 2000: ...

  5. Product activation - Wikipedia

    en.wikipedia.org/wiki/Product_activation

    Product activation is a license validation procedure required by some proprietary software programs. Product activation prevents unlimited free use of copied or replicated software. Unactivated software refuses to fully function until it determines whether it is authorized to fully function. Activation allows the software to stop blocking its use.

  6. Software cracking - Wikipedia

    en.wikipedia.org/wiki/Software_cracking

    Software cracking. Software cracking (known as "breaking" mostly in the 1980s [ 1]) is an act of removing copy protection from a software. [ 2] Copy protection can be removed by applying a specific crack. A crack can mean any tool that enables breaking software protection, a stolen product key, or guessed password.

  7. Software license - Wikipedia

    en.wikipedia.org/wiki/Software_license

    Software license. Diagram of software under various licenses according to the FSF and their The Free Software Definition: on the left side "free software", on the right side "proprietary software". On both sides, and therefore mostly orthogonal, "free download" ( Freeware ). A software license is a legal instrument governing the use or ...

  8. Universal Product Code - Wikipedia

    en.wikipedia.org/wiki/Universal_Product_Code

    A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

  9. Fn key - Wikipedia

    en.wikipedia.org/wiki/Fn_key

    The Fn key is a form of meta-modifier key, in that it causes the operating system to see altered scancodes when other keys on the keyboard are pressed. This allows the keyboard to directly emulate a full-sized keyboard, so the operating system can use standard keymaps designed for a full-sized keyboard. However, because the operating system has ...