Microsoft will let users build access controls into documents

Microsoft will let users build access controls into documents "Microsoft Corp. said organizations can better control digital information in their internal networks with software it plans to release this year.
It's part of Microsoft's 13-month-old Trustworthy Computing initiative, which focuses on improving the security of software and the privacy of information. The software, called Windows Rights Management Services, can be used by anyone creating an e-mail, Word document, Excel Spreadsheet, Adobe PDF or other file. The creator can specify which individuals or groups in an organization can read, copy, print, forward or edit the document. Documents can even be given a finite lifespan."