Indoor positioning where GPS can’t reach
Flowlead: native iOS and Android apps that track a person’s position inside cruise ships, using Bluetooth beacons and the phone’s own sensors.
The challenge
Detect reliably when someone changes floor by stairs or elevator. This was the exact problem the client had with the previous contractor.
The result
The proof of concept and the working floor‑change algorithm secured the commission for PixelStudio.
What I did
- Designed the floor‑change detection algorithm that is in use today.
- Building the iOS and Android apps, and taking part in every technical decision.
- Designing how the phone’s sensors refine Bluetooth scans to improve accuracy.
- Built a working proof of concept quickly with Claude Code to validate the idea with the client.
- Went on board in person to test the tracking system in real conditions.