How do you implement a login feature on a Wordpress site? I am wondering if Wordpress natively supports a login feature for the webpage itself. I am not talking about implementing a login page for the admin section, because it's already implemented, but a login page to be able to identify users across browsers and devices, since it would allow us to assign a custom user id for google analytics.
Is it possible to implement it without a plugin? And what tables can we use to define our users? Do we have to create our own tables for our own custom users?