I recommend installing the free demo version prior to getting and check the need for session management. The OC Session Manager module is largely meant for OpenCart 3. Opencart stores some person data (language, currency, cart, and so forth.) in PHP classes. OpenCart can store this information in two techniques: https://back-office-prestashop88888.link4blogs.com/53477493/considerations-to-know-about-opencart-vs-magento