Globally unique identifier (GUID - Global Release Identifier), GUID is a 128-bit globally unique identifier (GUID - Global Release Identifier), GUID is a 128-bit binary number (16 bytes), which can be used on all computers and networks that require a unique device identifier. The likelihood of this identifier being repeated is very small. The GUID format is "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", where each x is a hexadecimal number in the range 0-9 or a-f.
