Not all of these sources come through the Internet. Think GPS, GSM, radio time s... | Hacker News

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		datenwolf on April 28, 2019 \| parent \| context \| favorite \| on: You Can't Trust Network Time Not all of these sources come through the Internet. Think GPS, GSM, radio time signals (DCF-77 or the likes).

misterkgb on April 29, 2019 [–]

Those solutions all require additional hardware - hardware that's far more expensive than an on-board real-time clock and battery.

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