#Default behavior

Knotch will track unique visitors by setting a cookie on the `.knotch.it` domain. We offer several options for clients to ensure that their websites are compliant with privacy laws while still providing the flexibility that their properties and teams require.

By default, users are opted in except in countries from the EU, where the opt out is set to true by default.

#Knotch Script on the Page

If the Knotch script is on the page, we surface an API that can be used to trigger an opt out or opt in. This public API call will set an “opt out” cookie on the .knotch.it domain which will prevent tracking cookies from being set.

If the user wishes to be opted out from cookie tracking, you can trigger:

<script>
  Knotch.setOptout(true);
</script>

If the user wishes to opt in to cookie tracking, you can trigger:

<script>
  Knotch.setOptout(false);
</script>

#Knotch Script not on the Page

If, for example, the Knotch script is not embedded across your entire website and the user wishes to opt out on a page without the script, you can set a knotch_optout=0 cookie on your domain. The 0 value means that the opt-out is requested but not done yet.

The user won’t be opted out from Knotch tracking without visiting a page that is embedded with the Knotch script. The next time they visit a page that has the Knotch script on it, we will check for the knotch_optout cookie, trigger Knotch.setOptout(true) then set the cookie knotch_optout=1 on your domain. This means that the user has been properly opted out.

#Opt Out by Default

If you wish for every user to be opted out by default, set a knotch_optout=0 cookie on your domain. The Knotch script will check for it & automatically opt out the user. Users will be able to opt in via the banner or preferences if they desire.

When users are opted out, whether by default or based on personal preference, the only metric that will be impacted is the unique visitors count, which will more closely align with page views. All other metrics, such as time on page, scroll depth, responses, and referral sources, will continue to be collected as expected.