How to login ipphone using userid and pin instead of user id only ?

I've succeeded in doing the login operation using tutorial from this site
Cisco DevNet

Then I want to know, is there a way to login using userID and PIN instead of using the userID only? Because login only using the UserID is not secure.

Thank you very much.

i learn codes from Cisco DevNet

I'm not sure I understand the question.  You're referring to Extension Mobility, correct?  It uses the PIN set for the user.  Did you set a PIN for the user?

Owh i am sorry I forgot to mention, I mean do the login using third party program, not using the Ip-Phone Thank you.

What third party program are you talking about?  Do you know how it performs the login process?

Are you talking about using Java with the EM API?  If so, you should probably post your question here:

Extension Mobility API