A breathalyser for bars, and the dashboard behind hundreds of them. It tracks each one over BLE: how often it was used, when it needs service, where it is.
A breathalyzer for places like bars. But just for fun. You are out with your friends, having a good time, and you check your alcohol level in between. I worked on the R&D team for one of these. So besides drinking a few beers and blowing into the device to "test" it, what did I actually do all day? I worked on BLE and owned the communication between the device and the phone. Then there is everything around it. You have hundreds of breathalyzers sold to businesses, and you need remote access to all of them. You need to track how many times each device was used, when it needs maintenance, who you gave it to, where it is right now, whether it is on or off. You need a dashboard that answers all of that. And a place where the dealers you sell to can buy credits from you online. Well, I was the dashboard guy. Telemetry flowing like Roadrunner. ThingsBoard, React, CSR, gRPC, and some technical stuff that nobody really cares about.
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