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Concealed Large-Metal Anomaly Screening

A hallway that notices someone carrying a large hidden metal object.

Frontier Frontier

Plausible physics, early work — shown honestly as an experiment.

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How it works

Metal reflects signal far more strongly than a human body ever can. A big concealed object — a toolbox, a machete-class blade, stolen copper — adds a bright extra echo that travels along with the person carrying it. The system flags the glint and where it went; it does not name the object.

In the physics: Metal is a near-perfect scatterer: a body-carried metal object creates a new, strong, polarization- and angle-dependent specular multipath component that a purely dielectric human body cannot produce. In the CIR this appears as an anomalously strong extra tap that moves rigidly with the tracked person, with scattering cross-section far above tissue.

See it work

Preparing the recorded fieldLoading real LatentField pipeline output…

This is real pipeline output for Frontier, replayed. The exact reading depends on your room.

Bring this into the real roomField Lab Kit6 sensing nodes · ~$320 parts · about 120 min
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How the field becomes an answer

Stage 4 RTI tracks the moving person's position Stage 1 CIR sparse recovery detects a co-moving extra tap whose amplitude/delay is kinematically locked to the RTI track Stage 5 field reconstruction classifies the scatterer as conductor-like (sigma-dominated) vs dielectric Stage 3 anomaly manifold scores against the site's normal 'people + phones + keys' baseline.

How we prove it

Own-hardware corridor rig: N subjects walking with/without concealed metal plates of graded area (0.005-0.1 m^2), report ROC vs object size; sanity-check tap-detection machinery on OPERAnet/WiMANS walking traces.

Who it is for

'Camera-free anomaly screening at every doorway' — loss-prevention and campus-security teams get a metal-object tripwire for the price of a WiFi node, with zero biometric data collected.

The matching solution

Complete first-room estimateField Lab Kit6 nodes · ~$320 parts · 120 min Request kit, subscribe, or set up →
Compatible DIY hardware options
Prosumer Pro (paired node)$110–150

60 min · intermediate

Operator Multi-Node$700–950

240 min · installer

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