Nothing new here

RFID tags only do what the existing bar coded tags do. The only justification for using them is if they improve the accuracy and reliability of reading them as they pass through the baggage sortation (I know that's a hideous word but it's the one they use) systems - at both ends of the flight. Which is one reason why implementing them in one airport only is of limited value (not completely valueless in a major transfer airport like Heathrow).

Most airlines are still very reluctant to spend the money on these systems as they are yet to be convinced that there is any substantial improvement over bar codes to justify the investment.