User Session Synchronizer allows you to keep the user logged in from one wordpress to another by synchronizing user data and cookie session based on a verified email.
The user email is encrypted based on the current user ip and a secret key shared by the synchronized wordpress installations.

Features

• Synchronize session between installations
• Verify user email through new registration
• Verify user email through manual admin action
• Verify user email through email verification code
• Prevent user form changing email
• Display historical sessions
• Auto add new subscriber if user doesn’t exist
• Destroy session everywhere on logging out

Upcoming

• Multiple secret keys & networks
• Enable ajax cross-domain requests