you can access identity verification key of your work space via this link
then send cantact_hash to the following end-point
post
https://widget.imber.live
/contact/sdk
get token for existing visitors
Bearer authentication
Bearer authentication (also called token authentication) is an HTTP authentication scheme that involves security tokens called bearer tokens. The name “Bearer authentication” can be understood as “give access to the bearer of this token.” The client must send this token in the Authorization header when making requests to protected resources: