What is the purpose of a Product Key in software?

The purpose of a Product Key in software is to verify and unlock an original software program. A Product Key serves as a unique identifier that proves the software has been legitimately purchased and is authorized for use. When the software is installed, users are typically prompted to enter this key, which the system checks against its database to confirm its validity. If the key is correct, it unlocks the software features, allowing users to access the full functionality.

This verification process helps to prevent software piracy by ensuring that only users who have legally purchased the software can install and use it. It provides a way for software developers to control distribution and maintain the integrity of their product.