DOJ says trust is key to fighting cybercrime Summary: At the RSA Conference in San Francisco, CNET's Brian Cooley sees a new technology that changes passwords once a minute on devices including PDAs, cell phones and wristwatches. April 15, 2003 -- 22:14 GMT (15:14 PDT) Loading... Please wait. Topic: Hardware Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.