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A comment on Wireless Charging Power Side-Channel Attacks. Parent comment

Re:Wireless Charging Power Side-Channel Attacks by ccouzens on Monday September 13, 2021 @08:08AM (#28510451)
Next week on HN:

School teachers able to determine which students have been using their phones in class by looking at battery charge before and after.

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Re:Wireless Charging Power Side-Channel Attacks by Scoundreller on Monday September 13, 2021 @08:47AM (#28510800)
Was going to guess it was by microscopic blackouts every second where sensors would detect the source of any light that remains.
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