Plan Fulfillment is how home designers get a plan set into a client's hands: watermarked with their name, locked with a password, and sent as a link that expires when you say so.
Your logo and the client's licence details across every sheet, plus microtext woven into the drawing field that survives a photocopy.
AES-256 encryption with a generated password. Decide whether the client can print, copy or edit — and set the date the plans stop opening.
One link, a download limit you choose, and a log of every download with time and location. Revoke access any time.