# EMF & Sensors

> Canonical page: https://ectify.app/blog/topic/emf

EMF is the most misunderstood reading in ghost hunting. These guides explain what a phone magnetometer and a dedicated meter actually measure, where the difference matters, what everyday sources cause a spike, and how to set a baseline so a jump means something. They also cover temperature and pressure, which often change at the same moment as a reading. If you only read one section of this blog before buying a meter, make it this one.

## Guides

- [Temperature, Pressure & EMF: Interpreting Environmental Data During Your Ghost Hunts](https://ectify.app/blog/temperature-pressure--emf-interpreting-environmental-data-during-your-ghost-hunts.md): EMF spike or just bad wiring? Learn how to log, compare, and decode ghost hunt readings without fooling yourself.
- [Smartphone vs Dedicated EMF Meters: What Ghost Hunters Really Need to Hunt Evidence Wisely](https://ectify.app/blog/smartphone-vs-dedicated-emf-meters-what-ghost-hunters-really-need-to-hunt-evidence-wisely.md): Can your phone really detect paranormal EMF, or is a dedicated meter worth it? See where apps shine, fail, and when to upgrade.
- [How Smartphone Sensor Calibration Shapes Your Ghost Hunt: Making EMF Detections More Reliable](https://ectify.app/blog/how-smartphone-sensor-calibration-shapes-your-ghost-hunt-making-emf-detections-more-reliable.md): Think that EMF spike was paranormal? Your phone sensors may need calibration first. Learn quick fixes for more trustworthy ghost-hunt data.
- [10 Unusual Signal Sources That Can Cause EMF Spikes — And How to Tell If They’re Paranormal](https://ectify.app/blog/10-unusual-signal-sources-that-can-cause-emf-spikes--and-how-to-tell-if-theyre-paranormal.md): Your EMF meter may be lying. Discover 10 overlooked causes of spikes—and the clues that make a reading feel truly unexplained.
- [Smartphone EMF Apps: What They Can—and Can’t—Actually Detect](https://ectify.app/blog/smartphone-emf-apps-what-they-canand-cantactually-detect.md): Your phone may spot magnets—but not all EMFs. Learn what these apps really detect before your next investigation.