As the name implies, it is to unlock the number corresponding to the product restriction.
2. Serial number is an identification code given to the software by the software developer, which is similar to a person's ID number. Its main function is to prevent the software from being stolen by users. If users want to use their software, they must know the serial number.
3. There are many serial numbers.
Online game serial number: Online game serial number, also known as novice serial number, is a "gift" that online game companies send to players to promote online games, such as Netease's boasting serial number. The activation serial number will be rewarded in general games.
Software serial number: "serial number" sometimes refers to "machine code", which means that some software has taken certain protection measures to prevent piracy. When a user registers, a unique identification code will be generated according to the computer software and hardware information installed by the user's software, which is generally called machine code, also called serial number, authentication code, registration application code, etc.
Mobile phone serial number: Mobile phone serial number is the common name of IMEI code. IMEI is TAC+FAC+SNR+SP. Imei (International Mobile Equipment Identification Code) is the abbreviation of international mobile equipment identification code, which is an "electronic serial number" composed of 15 digits, corresponding to each mobile phone one by one, and the code is unique in the world. After assembly, each mobile phone will be given a unique group number in the world, which will be recorded by the manufacturer from production to factory. IMEI codes are uniformly distributed by GSM (Global Association for Mobile Communications) and authorized by BABT (British Communications Certification Management Committee).
In addition to the above three, there are many serial numbers.