Even when the caller ID window displays "out of area" or "name blocked" messages, telephone users do not have to worry about risking their identity or placing personal information at risk if they decline to answer. But this is not the case with email. Malefactors can easily spoof the sender's address to trick the recipient into opening the message. A solution to this problem might soon be available. The computer industry is fast-tracking a system called <A HREF="http://news.yahoo.com/s/nf/38096">email authentication,</A> which will attempt to do for email what caller ID does for telephone calls. Email authentication will assure the recipient that the sender actually is the person identified in the message header.