自动统计访客人数，实现 98% 的客流统计准确率

Overhead 3D stereoscopic and Time-of-Flight (ToF) LiDAR sensors capture high-resolution depth maps from above doorways. By measuring the physical height, shoulder width, and vector trajectory of moving objects, the edge processors track individual human heads with 98% to 99% accuracy while filtering out shadows, floor reflections, shopping trolleys, and prams.

Optical 3D sensors provide bidirectional line-crossing counts at specific physical entryways to determine exact doorway volume. WiFi presence analytics measure smartphone probe requests across your wireless access points, providing broader venue metrics such as dwell time distribution, cross-zone flow, and return visitor frequency without needing line-of-sight overhead cameras.

Purple connects live sensor data to digital screens or LED indicator lights at entrances via real-time webhooks. When current occupancy approaches safe operational limits, the system dynamically shifts the display from green (enter) to red (please wait), automating customer flow control without requiring dedicated security personnel at every doorway.

Yes. Advanced 3D sensors use height filtering (typically ignoring objects under 1.2 metres to distinguish luggage and trolleys from adults) and spatial mass analysis. Venues can also integrate BLE staff badges or WiFi authentication to automatically subtract active on-duty employees from public customer occupancy figures.

Purple provides REST APIs and WebSocket streams that push occupancy counts in sub-second intervals. Venues use these endpoints to feed live 'busy hour' widgets on consumer websites, automate HVAC and lighting adjustments in building management systems (BMS), and alert store managers when queue wait times exceed defined thresholds.

Yes. 3D optical and ToF sensors do not capture, record, or store identifiable facial images or personal data; all spatial processing occurs on edge hardware before discarding visual frames. WiFi location analytics use one-way salted cryptographic hashing on device MAC addresses, ensuring compliance with GDPR, CCPA, and global privacy standards.