Blog

A warehouse supervisor showed me a graph that looked like a heartbeat on espresso. The RSSI from one Beacon was swinging forty decibels every few seconds, and his location engine…

A customer sent me two boards with the same Bluetooth module on each, one with a chip antenna and one with a whip on the edge. The whip beat it…

Time Difference of Arrival (TDOA) positioning is one of the most accurate approaches in BLE-based indoor localization—but it places the most demanding requirement on the system: all receiving beacons (anchors)…

A maintenance shop told us they burned about forty hours a month looking for tools. Nothing was stolen. Everything was just somewhere else. Here's what we put on them, what…

A facilities manager asked me for one number. I gave him a dollar forty per square meter. Then he asked what was in it, and the meeting got long. The…

It paired fine on the bench. In the field it dropped every couple of hours, never at a useful moment, never reproducibly. We spent three weeks on it. Here are…

"Which one should we use?" The honest answer is "it depends," which is useless when you're the one signing the purchase order. So we stopped answering and started measuring: same…

We planned the Beacon rollout for six weeks. The plan was clean. The building was not. The floor plan is a lie Our model said one Beacon every twenty meters…

A product manager once asked me, flat out: "Why don't we just put the Bluetooth in our own chip?" Good question. The honest answer took a week of spreadsheets and…

A suitcase goes missing at baggage claim. The BLE Tag inside it is broadcasting, but the phone that could find it is in another terminal. The owner walks past a…