Tougher authentication to become more mainstream Summary: VeriSign chief technology officer Ken Silva expects more consumer businesses to use increasingly stringent ID methods By Tom Espiner | November 6, 2008 -- 13:27 GMT (05:27 PST) Follow @tomespiner SHARE: SUBSCRIBE TO: Security TOPICS: Security 0 By Tom Espiner | November 6, 2008 -- 13:27 GMT (05:27 PST) Loading... Please wait. Innovations in usability will spur the wider use of the tough authentication measures used by banks and enterprises, VeriSign chief technology officer Ken Silva tells ZDNet UK. Topic: Security Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.