How to automatically fill data to another web form?

[nextjet]

To avoid user copy the info (i.e. name, dob, ssn etc) from website1 and fill to another website2's form manually, I'd like to use some kind of javascript to grab the info in website1 and automatically fill the form in the website2.

I am developing website1 while website2 is another public website which I have no control.

Is this feasible? Any hint? Thanks a lot.

[BigMoosie]

If you owned both websites it would be possible by cookies. But otherwise no, not feasible.