** for now, after successful pairing, set /var/lib/openhab2/jsondb/homekit.json read only after successful pairing. May have to undo to re-create a new pairing
* after a reset of the openhab server, it may take quite some time for homekit to attempt a reconnect to the server. You can force a reconnect by putting the iPhone etc temporarily into and out of airplane mode. This forces homekit to reconnect
* looks like most people gave up on the homekit addon in OHAB2, and use Node + Homebridge + Node-OHAB plugin. Install here: https://www.npmjs.com/package/homebridge-openhab2
== Alexa setup ==