SCIENTISTS IN CHINA have created a quantum smartphone that cannot be hacked. The phone comes with a built-in module and a special SIM card that can encrypt and decipher voice calls using “quantum key distribution”, Science Daily reported on Tuesday. A number of countries have been working on similar devices, but China's looks like
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From my understanding, the main benefit of the quantumness was the inability of third parties to intercept data without changing it. But it sounds like this system relies on a series of base-stations relaying the data over fiber optic cables. Each of these base stations have access to all the keys, per Yogthos’ article.