Hack-proof RFID chips

Researchers have designed an RFID chip that prevents so-called side-channel attacks, which analyze patterns of memory access or fluctuations in power usage when a device is performing a cryptographic operation, in order to extract

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Computing with time travel?

If the universe allows ‘open timelike curves’, particles travelling back in time along them could help to perform currently intractable computations. Even though such curves don’t allow for interaction with anything in the past,

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