[squid-users] Possible that a specific ID is bound to a certain IP?

Dear friends,

   Wondering if it is possible to configure squid to match the userid
with a certain IP. So that the user id cannot be used in another
computer. Reason for this is because I need to restrict some users from
taking the general sharing user IF and use it at a computer somewhere else.
The authenticate_ip_ttl works well to prevent may users using the same
ID at once but it does not prevent the users from using the user id in
another computer.

What I need is so that all uses have to share a general publich usage
computer, so they won't be able to take the ID elsewhere, is that possible?
please teach me how to do so, thanks a lot for your assistance!

-- 
Yong Bong Fong (Ah Fong)
System Engineer
MIS Department
Shin Yang Group of Companies
Email: bfyong@shinyang.com.my or potatoinmiri@yahoo.com.au
Tel: (60)085-656699 Ext 375
"A proud local and loyal authentic Mirian"