What do they expect you to do if the form has both an email and a postal address as options for sending in, and yet has a space for a signature?
Do you type your name in? Scan it in? Or do as I've done in the past and email the form but - belt and braces - post another hard copy, signed (which seems to defeat the object of taking forms by email).
Part of me thinks this is an intelligence test, and all part of employers' "guess what I am thinking" approach to applications.