US Patent 9682590 Printed document security

A printed document includes encoded content. The at least some content of the printed document is acquired and securely communicated to a support service. Information received from the support service is used to present user-readable content on a display. One or more portions of the encoded content are decoded for inclusion with the user-readable content, in accordance with an authorization of the user. Printed documents having encoded content may be distributed without security concerns due to the machine-based, authorization-driven nature of respective methods and apparatus.