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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.
by ccouzens 5y ago
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.
- Scoundreller 5y agoWas going to guess it was by microscopic blackouts every second where sensors would detect the source of any light that remains.