Yes, Dr bill, using a standard photocopier to reduce and reduce the size if a printed document won't work, but i remember when i was at xerox, they developed (and never successfully marketed, as per usual) an encrycption code that looked like a "shaded pattern" one of the kind commonly found on " frames" with either WP or Word.. the shaded pattern could hold lots of encryption. so a 50 page document could be encryted onto a single four sided, 1/4 inch "grey" frame. to de encrypt, you would place the document onto another copier, and add a password, otherwise, you'd just get the same grey frame.

now days, encryption is a real science.. often using pairs of prime numbers,