Comment on WiFi signals can measure heart rate—no wearables needed
theunknownmuncher@lemmy.world 3 weeks agoWiFi can also do pretty precise location. Bluetooth/BLE even more precise (inches or less)
Comment on WiFi signals can measure heart rate—no wearables needed
theunknownmuncher@lemmy.world 3 weeks agoWiFi can also do pretty precise location. Bluetooth/BLE even more precise (inches or less)
yucandu@lemmy.world 3 weeks ago
I think they mean without a phone. A 2.4ghz radio can be used as a presence detection radar.
theunknownmuncher@lemmy.world 3 weeks ago
It sounds like they’re specifically talking about a phone, making reference to app permissions and TikTok.