Comment by arthurofbabylon

> “ Can you think of a time in tech when a new method…”

1. Apple/Google exposure notifications during the latest pandemic. 2. The Signal Protocol. 3. Differential Privacy (DWork et al) deployed by the US Census and Apple/Google. 4. Examine David Chaum’s body of work. 5. PIR motion sensors. 6. Elder care monitors. 7. Cities selecting lidar over cameras in traffic applications (motivated by privacy). 8. Retail foot-traffic counters. 9. Stickfigure/silhouette masking in Japanese elder care recordings. 10. Those traffic signs that read, “your speed is X.” 11. On-air or active-session indicators in recording studios.

Jeez it turns out that when you go looking for examples of designed-for-privacy monitors they are EVERYWHERE. Sounds to me like it is a completely reasonable expectation.