Hi Vangelis,
Thanks for the suggestions, appreciated, every signal can be sniffed with HA appliances but we are decades away from a future where local house thieves are hacker savvy with equipment set up on streets to monitor entire streets smart appliances sending their Bluetooth, zigbee, zwave signals through the air.
The August smart door lock has the Bluetooth unlock feature and sells for around £228 / $350, so it is pretty cool to be able to make a Bluetooth doorlock for under £50/$76. Below is a quick demo of my smart watch unlocking the door, the smart watch only cost £10/$15.
So now as I walk up to the door it unlocks and turns on the TV, DVD, sound bar. When I leave the room to go make a tea or something it locks the door and turns the TV off into standby until I come back.
The only annoying thing is my Samsung TV has the same IR code for off as on, so if the connection drops and reconnects it turns the TV off.