This extension adds a checkbox in the login form, where upon checked the customer will not get logged out for the specified days (by default 30 days). This will improve user friendliness of the website for the customer.
When a customer is logged on, you can always take control of what the customer sees in the website or the recommended products to show to the customer based on his previous purchases. You may also track the customer activity easily.
This add-on is available in vqmod version as well as ocmod version. When the customer checks the checkbox in the login form to keep him logged in, technically it sets a cookie in customer browser. Therefore whenever he returns to the website, he remains logged in. The cookie will be deleted only if the customer chooses to logout.