I just wanted to make note for anyone looking for a replacement for the passphrase plugin which is not supported by CB 2.0+, or a solution to adding a passphrase or security code, access code etc. to your registration page.
I put off upgrading a site to J3 with CB 2 for this reason alone, however recent forum searches found this post with a very easy to implement solution using the CB Query plugin. It is working perfectly on this J3.4.6 site with CB 2.0.12.
