I recommend installing the free demo version in advance of purchasing and check the necessity for session management. The OC Session Manager module is mainly intended for OpenCart 3. Opencart stores some user info (language, currency, cart, etc.) in PHP sessions. OpenCart can store this info in two techniques: From https://japamala-tibetana16160.wssblogs.com/31865713/the-best-side-of-opencart-reviews