What is one method software companies use to prevent unlicensed use of their products?

Product activation is a method employed by software companies to ensure that their products are used only by authorized users. This process typically requires the user to input a unique product key or activation code during installation or the first run of the software. By linking the software to this key, the company can track and limit the number of installations that can occur with a single license key, thus preventing unauthorized use and piracy.

While regular updates keep software secure and improve functionality, they do not directly address the issue of unlicensed use. User licenses are agreements outlining the terms of software usage, but they do not actively prevent unauthorized access on their own without enforcement mechanisms like product activation. Trial versions provide a limited-time opportunity to use software before purchase but offer no ongoing protection after the trial period expires. Therefore, product activation stands out as a proactive measure specifically aimed at safeguarding against unlicensed use.