I've been trying to use OAuth2.0 from openstackid.org with User REST API on it in Refstack project https://github.com/stackforge/refstack. User REST API from openstackid.org provide following fields: name, family_name, nickname, picture, birthdate, gender, and email. But on https://www.openstack.org/profile/ I can change all fields including email. If I changed my email I get new OPENID. For example before changes: https://openstackid.org/vladislav.kuzmin after changes: https://openstackid.org/vladislav.kuzmin <https://openstackid.org/vladislav.kuzmin.1>.1 I think, that primary email and OPENID can not be changed How can I distinguish between users in my application? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-infra/attachments/20150415/97735083/attachment.html>