Wireless Fidelity, Wireless Ethernet at first
Marketing term originated from Hi-fi  
암호 안걸린 공공 와이파이 접속 자제하고 해도 vpn통해 통신보호 필요
IEEE 802.11 무선랜이 표준
비번크랙하면 결국 하려는 거는 지나가는 패킷을 가로채 도청하거나 위변조, 암호화되지 않은 통신이면 아예볼수도
Wifi Notion
Wifi Usages
Wifi is a Sensor
Pulse-Fi measures heartbeat using Wifi signal. It achieves an error of less than 1.5 bpm, matching the performance of conventional sensors.
Research is underway to reliably detect multiple users simultaneously at distances up to 3 meters in various postures with over 100 subjects

 Seonglae Cho
Seonglae Cho


