Editing Serial number (section)

===Serial numbers for intangible goods===
Serial numbers may be used to identify individual physical or intangible objects; for example, [[computer software]] or the right to play an online multiplayer game. The purpose and application is different. 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 [[software license | 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. If an unauthorized user is found to be using the software, the legitimate user can be identified from the code. It is usually not impossible, however, for an unauthorized user to create a valid but unallocated code either by trying many possible codes, or [[reverse engineering]] the software; use of unallocated codes can be monitored if the software makes an [[Internet]] connection.