--- title: "Geomagnetic Navigation Is Replacing GPS. Here’s How It Actually Works." url: https://daily.dev/posts/geomagnetic-navigation-is-replacing-gps-here-s-how-it-actually-works--aofmaxslg source_url: https://www.youtube.com/watch?v=-itpFbs_hEw type: video:youtube source: "Tiff In Tech" published: 2026-06-27T14:02:56.025Z updated: 2026-06-27T14:03:35.617Z reading_time: 1 upvotes: 2 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Geomagnetic Navigation Is Replacing GPS. Here’s How It Actually Works. **[Tiff In Tech](https://daily.dev/sources/tiffintech)** · 1 min read · 2 upvotes · 0 comments ## Summary GPS has three major blind spots: underwater, deep indoors, and in conflict zones where it can be jammed or spoofed. Geomagnetic navigation offers a solution using the magnetometer already present in modern smartphones. Every location has a unique magnetic fingerprint shaped by local steel, concrete, and underground infrastructure. Companies like Astronav and Hydronics are mapping these fingerprints and using neural networks to enable on-device indoor positioning accurate to under a meter — no satellites or external infrastructure required. The indoor positioning market is forecast to reach $150 billion by 2030. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Magnetometers Power GPS-Free Indoor Positioning](https://daily.dev/posts/magnetometers-power-gps-free-indoor-positioning-6s5nkwbfj) · IEEE Spectrum · 0 upvotes · 0 comments - [Quantum navigation could solve the military’s GPS jamming problem](https://daily.dev/posts/quantum-navigation-could-solve-the-military-s-gps-jamming-problem-ynlm983ku) · MIT Technology Review · 0 upvotes · 0 comments - [Drone makers race to build navigation that survives warzone jamming](https://daily.dev/posts/drone-makers-race-to-build-navigation-that-survives-warzone-jamming-gyk5rhywu) · The Next Web · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/geomagnetic-navigation-is-replacing-gps-here-s-how-it-actually-works--aofmaxslg)