CakeOTP is a reference implementation of User Registration with a secure, table-less and expirable implementation of One Time Password for the popular CakePHP development framework.
New in CakeOTP release 1.1
1) Automatic login process, after the account activation- The user is automatically logged into the site and is redirected to an internal page, immediately after activating his/her account.
2) User email validation.
Download this release here.