How to use scp using parallel by tyoing password only once

[Shantanu Unknown]

I think the problem is clear,
I have a bunch of files in a file which I want to scp using parallel. But when 
I do that it asks for a password evertimeI want to do scp? So it possible t o 
invoke scp with gnu parallel and with only 1 instance of typing 
password?Thanksshantanu