Pictured: The ISC West 2026 crowd as captured via point cloud
Security challenges are not limited to protecting physical boundaries. Many environments must also manage the movement and safety of large groups of people. Airports, transportation hubs, stadiums, and public events all require tools that help operators understand crowd behavior and detect potential risks.
Traditionally, this role has been filled by video surveillance systems. However, video‑centric approaches introduce both technical and operational limitations.
Why Crowd Monitoring with Video is Insufficient
Video surveillance allows operators to visually monitor crowd activity and investigate incidents. Many systems now incorporate video analytics that attempt to detect unusual behavior or crowd density. However, these systems often struggle in real‑world environments.
Challenges with Video‑Based Crowd Analytics
Video‑centric crowd monitoring systems face several challenges:
- Privacy concerns associated with continuous video capture
- Occlusions when individuals block each other in dense crowds
- Sensitivity to lighting conditions
- High monitoring workload for security personnel
These challenges can limit the effectiveness of video‑only monitoring strategies.
The Rise of Privacy‑Aware Spatial Analytics
In response to privacy and reliability concerns, many organizations are exploring technologies that provide spatial awareness without capturing identifiable imagery. LiDAR sensors provide detailed three‑dimensional spatial data while preserving anonymity.
LiDAR for Crowd Monitoring
Using LiDAR, systems can track movement patterns of people within an environment without capturing facial or identifying information.
This enables:
- Anonymous tracking of individuals
- Accurate crowd density measurement
- Movement flow analysis
Because LiDAR captures 3D spatial information, it can continue tracking individuals even in crowded environments.
Physical AI for Behavioral Understanding
When combined with analytics platforms, LiDAR data can support more advanced situational awareness capabilities.
These may include:
- Detecting unusual movement patterns
- Identifying crowd congestion
- Monitoring safe distances between individuals
Such insights allow operators to respond proactively to developing situations.
Why Accurate 3D Perception Matters
Understanding crowd dynamics requires accurate spatial measurement.
LiDAR sensors provide detailed 3D information that allows systems to:
- Distinguish individuals within dense crowds
- Measure distances and trajectories
- Monitor movement patterns across large spaces
This level of spatial understanding is difficult to achieve using video alone.
InnovizSMART and Crowd Analytics
InnovizSMART LiDAR sensors support crowd monitoring applications through:
- High‑resolution 3D perception
- Long‑range coverage
- Reliable operation across indoor and outdoor environments
As a result, a relatively small number of sensors are able to effectively monitor large public areas. But it takes an ecosystem.
In typical deployments:
- Innoviz LiDAR sensors generate spatial perception data.
- Analytics partners process this data to derive behavioral insights.
- Security command systems present alerts and visualizations to operators.
This approach allows organizations to integrate LiDAR into broader safety platforms.
Key Takeaway
LiDAR enables organizations to understand crowd dynamics and monitor public spaces while preserving privacy—providing a powerful foundation for next‑generation situational awareness systems.