Protected data in custom fields?

[kirbyglad]

I have an account number that I want to display on the order pages and confirmation email. I can sucessfully pass this in to shop site from the calling page.
1) How would I load this data into a custom order field?

2) How can I prevent the user from changing the value in the custom field?

Thanks,
Kirby

[robm]

You could use a custom checkout field, make it a type of "hidden" and populate it with either JavaScript or using the CALL tag that pulls the data you want to use from a stored cookie.