@Himanshu Tomar -- unfortunately, there isn’t a way to identify users when using an anonymous board.
Right now, the Live Embed feature only supports two user flows:
1. Allowing existing Miro users to log in and interact with a board.
2. Creating an anonymous, temporary board that allows non-Miro users to interact with the board, which will be deleted after 24 hours. This approach does not currently offer a way to populate the name of the anonymous user.
However, we are currently planning how to expand the Embed SDK offerings, so I encourage you to submit this feature request on our Roadmap. By doing so, you’ll be subscribed to any future updates we may send about the request.
-Joanna