Encrypting Transactions With an App

An affordable and portable use of quantum-based tech may soon come to a smartphone near you.

RELATED TAGS: COMPUTERS
transactions
The billions of credit card transactions each year in the United States rely on secure cryptographic keys based on random numbers, which require specialized hardware to generate. Now, European physicists have shown how smartphones like the one in your pocket can reliably produce random numbers based on the laws of quantum mechanics. Modern smartphone cameras are sensitive enough to detect variations in light by just a few photons — the fundamental particles of light. Researchers at the Uni...
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