Radio-frequency identification, famously used to bug the US embassy in Moscow, is a cheap way to track objects and data.
smartwatches, smart thermostats, smart speakers and even smart cars.
But amid all this hype and worry, the humble RFID continues to quietly go about its work. And my bet would be that its glory days are ahead. Human beings have better things to do than type in all that data - and so objects need to be built that will automatically supply that information to the computer, making the physical world intelligible in digital terms.Prof Joanne Chung Wai-yee of Hong Kong's Polytechnic University demonstrates an RFID-controlled system designed to stop prescription mistakes
Even if all many tags do is to nod to a passing RFID reader and say"right here, right now, this is me", that is enough for computers to make sense of the physical world.
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