China Eastern Airlines on Tuesday launched the world's first battery-less electronic luggage tag.

"The battery-less luggage tag, which was jointly developed by China Eastern and its partners, allows passengers to complete the baggage check-in process at home or on their way to the airport through an application on their mobile phones," said Shen Chenyi, general manger of the global luggage control center with China Eastern's ground service division.

He added that the built-in RFID (radio frequency identification) chip in the tag can also help passengers determine the exact location of their baggage.

According to Shen, the Shanghai-based carrier will release 4,000 luggage tags for free. Passengers are welcome to register their interest in using the product through the China Eastern app. Registrations will begin in August.

The special tags are currently only available on direct flights between Shanghai Hongqiao International Airport and Beijing Capital International Airport. China Eastern plans to expand this service further, especially in the new Beijing Daxing International Airport, added Shen.