file security issues

i have always liked the PDF files for one major reason. the security. the provide the secuity to a doument like no other. You have different levels of security. You can secure your document against printing even when it is available for reading. Although there are ways to skirt that but printing screen is really very poor option which do not give you as good results. and i have always wondered how designers secure their files. i am referring to architects and interior designers. they create such huge data which includes days of work and it is a pitiful situation if someone just pick it up, copy and paste it and use it without paying you a dime for your hard-work.

and i stumbled across this product which seems to provide the answer to these designers. i have a cousin who is an interior designers and she generally emails here CAD drawings. i would suggest her to give this file security product a try. if this product save her even one file from being unauthorizedly copied once, it will be worth its cost.