Confirming users email address when they register

[Edd Dawson]

Hi Everyone

Has anyone any experience of validating users email addresses who 
register with a jahia site before activating their account..

I am thinking by the usual method of emailing them a url to activate 
meaning their account is locked until such a link is visited.

Any idea on complexity of acheiving this with Jahia would be appreciated.

cheers
Edd