Anheuser-Busch will know within 50 seconds when consumers open special prize winning packs of Budweiser. It is using satellite tracking technology so that a signal is activated when one of 25 special cans and bottles are opened. The brewer can pinpoint the position of the can and pledges to deliver prizes within 24 hours. These are part of its World Cup activity and are trips to Japan and Korea to watch the matches. A Budweiser spokeswoman said the technology had been tested and believed all the prizes would be claimed by the cut-off date of April 20. {{DRINKS }}