tehfishman on Nostr: this isn't industrial, but my favorite recent example that I'm currently stuck with ...

this isn't industrial, but my favorite recent example that I'm currently stuck with is a solar battery made by ecoflow, sold as an emergency power backup device, that you can only configure with a phone app after connecting to your wifi or via Bluetooth. The Bluetooth connection works if your phone is not on the interwebs. BUT. If your phone has not been on the interwebs for like a week, it signs out of the app and then you can't configure your _emergency power backup battery_ anymore.