more of a GID then....
to make it unique I'd add in somthing like the MAC address of their Ethernet card which *should* be unique, IP addresses privacy aside can be dynamic and therefore not unique.
serial numbers from other hardware could be used but cpuID's for example are often masked by the BIOS
to make it unique I'd add in somthing like the MAC address of their Ethernet card which *should* be unique, IP addresses privacy aside can be dynamic and therefore not unique.
serial numbers from other hardware could be used but cpuID's for example are often masked by the BIOS