> The first thing Claude did was scan for BLE (Bluetooth Low Energy) devices nearby. It found mine among 35 devices in range, connected, and mapped the interface -- two data channels. One for sending commands, one for streaming data.

Read the article before you unholster your weapon next time.

yes but https://aimilios.bearblog.dev/reverse-engineering-sleep-mask... reads like they connected to MQTT and received data from IOT devices on there, not using BLE

I’ve read the article. Sounds like you don’t understand the difference between MQTT and Bluetooth.