A client of a web design team I am on wants to have an online edocket system, where after logging in to the system, filers can submit legal documents that will be aumatically filed into a web accessible database. I have a question regarding proving the validity of the filer and their document. Is it acceptable to use their login success as proof of document validity, or must they purchase a digital signature from a third party? I think the IRS allows online filing via login, I need to know this as the client is also a goverment agency. Basically the filers will be attorneys from public utility ortganizations, and the type of documents being filed are transcripts. Thanks in advance for your input.