Security Standards (Global)
High-quality technical overview of Security Standards in the context of blockchain security.
Technologies: Wi-Fi RTT, Bluetooth Low Energy (BLE), LiDAR, UWB (Ultra-Wideband), IMU (Inertial Measurement Units).
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🧒 5살도 이해할 수 있게 설명
GPS is like a giant eye in the sky. It can see you when you are outside, but it can't see through roofs. Indoor mapping is like having a thousand little eyes inside a building (like Wi-Fi routers) that work together to tell you exactly where you are, even if you are in the basement.
🤓 Expert Deep Dive
Technically, indoor mapping relies on 'Signal Triangulation' and 'PDR' (Pedestrian Dead Reckoning). A core challenge is 'Signal Scattering' caused by walls and furniture. Advanced systems use SLAM (Simultaneous Localization and Mapping) where a device (like a robot or iPhone) uses cameras and LiDAR to build a map of an unknown space while simultaneously tracking its own position within it. The data is often stored in formats like IMDF (Indoor Mapping Data Format) which allows for 'Semantic' mapping—knowing not just that a point is 'Space', but that it is a 'Restroom' or an 'Emergency Exit'.