Can I use the same UUID by multiple clients? Craig Conover December 14, 2020 14:16 Updated No, UUID’s should be unique among clients (or users) and should not be re-used. Related articles What is a UserID (formerly UUID)? Can PubNub call my server via Web Hooks when presence events occur? How do I enable add-on features for my keys? Do presence events work with channel groups? How do I convert the PubNub timetoken to Unix timestamp?