If MapInfo 12.0 was previously installed, you can often find your active serial number in the installation directory by opening UserInfo.log in Notepad. Windows Registry: For 32-bit installations, you can look under
When you install MapInfo 12.0, the serial number you enter determines your license type: Node-Locked (Third character 'N'): mapinfo professional 12.0 serial number access code
This is a single-user license tied to one computer. It requires automatic or email activation. Concurrent (Third character 'S'): If MapInfo 12
If you bought a physical copy, these numbers are on the card included inside the box. Userinfo.log File: If MapInfo 12.0 was previously installed