From now on, people using Chrome Stable can connect to BLE devices and send them all sorts of messages. So now @waytools could make the configuration app into a cross-platform webapp

Note that that is A LOT of work if it was not considered beforehand, so don’t get your hopes up. However, something like a serial # checker should be simple, telling you the support remaining on the device…

Examples at https://webbluetoothcg.github.io/demos/ - nothing that does anything interesting with the TextBlade though.