I have been lurking around in this forum for quite some time and used openHAB 2 and for a few months now OH3. Currently I am working with a few colleagues on designing a class of battery free devices (Think RFID, but as Sensor). Currently this is mostly done for industry applications. Passive sensors are used wherever electronic/batteries do not survive long enough or add to much weight.
Main idea for me is that I in the past kind of disliked the reliability of battery driven SmartHome devices, while at the same time cabling everything is not an option to me in a rented flat. I believe reliability has improved a lot over the last years (ZigBee ftw), but I kind of dread the idea to put sensors on every door and Window, as it would increase maintenance of my system.
So our idea is to put one cabled reader device in the middle of the room, i.e. like next to the light where your smart lightbulps are and where there is electricity and use this to read out passive sensors (door/window-contacts, buttons, temperature).
I am meanwhile wondering if this is just me who wants that/sees value in it or if there is more people out there who think the same?
Also, if yes: What would you be willing to pay to exchange all sensors in one room to be passive and have just one active cabled device? (200€,500€,800€?)
Is there features you think this device would definately need. e.g. (Wifi+mqtt,REST api, or Thread+Matter support)