SØPHIA Free Surveillance Guide (Field Manual Edition)

Learn how to spot hidden signals, rogue devices, and digital intrusions in your everyday environment. This free tactical guide shows you step-by-step how to run surveillance sweeps with nothing more than your phone and free apps.

But here’s the catch: manual sweeps are slow, fragmented, and easy to miss. That’s where SØPHIA, the passive signal-intelligence radar for Android, comes in.

This guide is your entry-level field manual: practical, fast, and immediately useful — while introducing the full power of SØPHIA.