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Another highlight of the festival is the Readable Architecture project, which enables visitors to learn about the histories of more than 1,000 old buildings by scanning a QR code on each of their facades.

Another Seattle-based company on the retail frontier is Impinj, which focuses on RFID tags and readers for a wide range of applications?including automated self-checkout.?Larry Arnstein, Impinj’s vice president of business development and solutions, said checkout-free shopping is likely to feel weird at first.

Anybody who knows about it will read the message that the Chinese promise counts and China is trustworthy.

Apart from Changsha, Baidu is testing autonomous driving with passengers in Beijing, Cangzhou in North China's Hebei province, and other places.

Apart from JD Logistics, Liu said JD Finance, a financial subsidiary of JD, will apply for financial service licenses if there is a need in the future.