Visitors to the 2010 World Expo won't have to wait in lines to have their tickets checked as they enter various exhibitions.

New radio-wave-based ticket technology will allow people to wander around the site wearing passes on their necks that can be read by scanners as they enter various exhibits.

The technology, called radio frequency identification, or RFID, provides an effective security check by transmitting a serial number via radio waves to identify an object or person.

Different from the traditional bar code systems usually seen in supermarkets, RFID is designed to enable readers to capture data on tags and transmit the information to a computer system without human intervention.

Expo visitors will also be given a display like a palm-sized computer when they enter the Expo site. The mini-computer can connect with a wireless link to provide information.

(CRIENGLISH.com July 25, 2006)