Tanks,
Sorry, my english no good.
In realy nothing was made yet but i'm searching the best to do that. I
will try explain again.
My application have any resources that i need to share with others
users, for example CVs, but i need release the access by send data
like password and login by email, and ensure validity of login for 15
days. After 15 days will necessary contact me for reactivate access.
I think that your question is all that i need.