5 ms·
There are a lot of interesting things you can do with wifi signals, human bodies show up with a lot of accuracy in them. Such as breathing rate detection, and h
by cannonpr 10y ago
There are a lot of interesting things you can do with wifi signals, human bodies show up with a lot of accuracy in them.
Such as breathing rate detection, and heart rate.
https://staticfloat.github.io/papers/WiBreathe_PerCom2015.pdf https://staticfloat.github.io/papers/WiBreathe_PerCom2015.pd...
- jessaustin 10y agoDoes this have anything to do with the 2.4 GHz band being selected for microwave ovens (and thus, wifi) in the first place, as it apparently has a special effect on water?
- Capt-RogerOver 10y agoYes it's the same frequency as water molecule's resonance frequency.
- rcthompson 10y agoWait, so in a building full of wifi signals, you could theoretically detect a body with no heartbeat or breathing and alert someone automatically?
- homero 10y agoPossibly, better get a startup going
- EGreg 10y agoSeriously, you can do this
- cannonpr 10y agoA more interesting question is who might be already doing this, and could you write a passive receiver for this to utilise ambient signals versus on purpose emitted ones. Considering it's utility in several scenarios, I can see why some money might be invested in developing this capacity without commercialising it.