The CoSign Digital Signature solution is a fine solution, especially for a large number of users (signers). CoSign is produced by ARX Inc. (www.arx.com) from San Francisco. CoSign allows signing of Word, Excel, PDF (Adobe), InfoPath, Web forms, and many other types of documents and forms. The ARX site has a fairly large number of flash demos that show how the solution works for various applications, file types, and environments. Hope This Helps.