Texaco has pulled the plug on a trial of electronic shelf edge labels (ESL) after testing the technology for the best part of three years. The move corresponds with a sudden resurgence of interest in ESL from Tesco and Safeway this year as techniques have improved and costs have come down. Texaco revealed it has had radio frequency labels from Swedish firm Pricer up and running at six company owned forecourt sites in Hampshire and Dorset since 1999. However, they will be removed in the next couple of weeks. A spokesman said the system, which allows prices to be changed from a remote location at the flick of a switch, was a "proven success". However, the labels were not compatible with new computer software being installed at the 334 company owned forecourts. Tesco has been trialling electronic labels from French company SES in the biscuit aisle of its store in Irlam, Manchester, since mid March, and Safeway has started trials at a number of undisclosed sites. Irish chain Superquinn is also testing the technology, which is established in the United States and on the continent. {{NEWS }}