Trolley Scan, of South Africa, has developed a breakthrough in RFID technology. It has created a supersensitive new RFID system operating on low power, yet being readable at up to 11 meters away.

In an article on FoodProductionDaily.com, the company's chief executive is quoted as saying:

"The holy grail of RFID is to produce simple, small, efficient transponders that are easy to mass produce and offer good operating range," said Trolley Scan managing director Mike Marsh. "The most frequent asked question is how well RFID systems work in the presence of metal - well the current answer now is 11 metres."

As they say, read the whole article.