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A 1.98-square-micrometer QR code, etched into ceramic thin film and verified by Guinness, showcases a new approach to ultra-dense, long-term data storage.

For those of us who weren't paying attention, over the last few years, scientists around the world have been one-upping each ...

A QR Code scan is like a raised hand in a crowded room. It’s voluntary, visible, and tells you exactly who’s interested. Compare that to website cookies, which are more like secretly following someone ...