The Chat widget requires the following cookies to function properly and to register the visitor. See Zendesk in-product cookie policy for a comprehensive list of cookies for all Zendesk products.
Chat/Web Widget
| Cookie Name | Cookie Domain | Cookie Path | Cookie Purpose | Cookie Duration |
| __zlcmid | customer's website top-host | / | store visitor's ID for widget's authentication | 365 days |
| __zlcprivacy | customer's website top-host | / | store visitor's decision on CookieLaw Javascript API | 365 days |
The cookieLaw object in the Chat widget Javascript API allows the visitor to opt into the cookie before the Chat widget initializes. See the cookieLaw docs.
If you're using Web Widget I(Classic) with Chat and want to enable cookie law mode, see Using the Chat widget JavaScript API.
Web SDK
| Cookie Name | Cookie Domain | Cookie Path | Cookie Purpose | Cookie Duration |
| __zlcmid | customer's website top-host | / | store visitor's ID for widget's authentication | 365 days |
If you built a custom widget using the Web SDK, your custom implementation must handle cookie consent. You should not call zChat.init until the visitor has given consent to cookie usage.