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HomeFuture TechFlying microchips the size of a sand grain could be used for...

Flying microchips the size of a sand grain could be used for population surveillance — NPR

The wind would scatter the tiny microchips, which could sense their surrounding environments and collect information, writes Scott Neuman.

Here is the link: https://www.npr.org/2021/09/23/1040035430/flying-microchip-sand-grain-northwestern-winged