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 Can PubNub call my server via Web Hooks when presence events occur? How do I set the UUID? How do I enable add-on features for my keys? How do I convert the PubNub timetoken to Unix timestamp? How many connections can a PubNub client establish?