Permutive assigns all users a unique ID which is used to track a user across multiple pageviews. If you want to take this a step further and track users across multiple browsers or devices, you can use your own identifier with Permutive. This is particularly useful if your site allows users to login, as you will likely have your own ID for any user who has logged in.
permutive.identify which enables you to pass in your own custom ID. You can pass in a custom ID as a single parameter to this function, for example
If you'd like help setting up permutive.identify, please contact firstname.lastname@example.org