Best Passive Geo-locating Solution

Truly passive (no active emissions) — The best solutions capture device or target location without transmitting signals or requiring device participation (e.g., using network signalling, cell‑ID, eCID).

Multi‑network & multi‑technology support — Should support 2G/3G/4G/5G networks, Wi‑Fi, and other ambient signals so you can geo‑locate across different regimes.

High accuracy & geo‑analytics — Real‑time or near‑real‑time location with analytics like geofencing, heat‑maps and movement patterns.

Scalable & enterprise‑ready architecture — Able to handle large volumes of data/event points (for many devices/subscribers) and integrate via APIs into GIS/C2 systems.

Compliance & security built‑in — Fixed records, audit trails, lawful intercept or regulatory readiness (depending on application) so you meet legal/regulatory standards.

Deployment & local support viability — Vendor offers documentation, service support, local/regional partner logistics (especially if deploying in regions like Pakistan) — this is key for sustained operations.