Single Sign On For TNG

Yes. See the screenshots. The full path and url to your TNG site is required plus a one-time key generation.

When a person applies for an account (ie: registers) at the WordPress site an entry for the person is added in both WordPress and TNG, awaiting separate approval. Approving the WordPress registration does NOT approve the TNG one. That must be done separately in TNG's administrator panel, so that you can decide whether or not to give them TNG access, and if so, at what level, branch, etc. You may want to use one of the many plugins that allow additional questions in the WordPress registration form so that you can decide how to proceed with registration in WordPress and TNG based on the answers.

An optional setting allows for the automatic addition of a WordPress user to the TNG account system, based on their role. This occurs transparently when they log in to the WordPress site. Multiple matching roles can be defined. The user's TNG account is automatically given active Guest privileges. The Admin is sent an email alerting that this has happened so that the TNG privilege level can be adjusted if needed.

No action is required. The plugin will synchronize the password in TNG with that in WordPress automatically when the user logs in. This assumes that the user name in WordPress and TNG are the same. If not another user will be added to TNG with the right user name. It is up to the administrator to deal with any residual user accounts in TNG that are now obsolete in this eventuality.

No, that is not its intent. It provides functionality to automatically log in to and out of the TNG Family Tree site when the user logs in to or out of the WordPress site. The template functionality within TNG allows you to give it an equivalent appearance.

No. The password is stored in a browser cookie in encrypted form using OpenSSL. The key used for encryption/decryption is unique to each installation and not publicly accessible.