A hardware ID is not a single serial number. Anti-cheat clients may hash several stable signals into a device fingerprint.

Key points

• Storage volumes, NIC MAC addresses, and SMBIOS data are common inputs.
• Virtual machines and fresh installs do not always produce a “new” fingerprint.
• Privacy-focused users may still care how much data leaves the PC.

Next steps

For Windows-specific detail, read PC hardware identification and privacy.