Microsoft is currently working on new activation technology to curb the plague of BIOS, SLIC, and various activation hacks that exist for Windows.
The new technology will be OEM Activation 3.0 (OA 3.0), an upgrade from OA2.1, which was used in Windows 7. A quick Google search will land you on Microsoft’s job post, confirming a position for this project.
Microsoft issues keys for OEM and computer manufacturers, some of which would allow the user to skip the activation process. These keys serve their function by checking for data in the OEM-embedded hardware BIOS. Unfortunately for Microsoft, hackers have found a way to circumvent this procedure.