In my last post I mentionned the motor driven door locks I have at my home. A frequent question I get from friends visiting me is, wether that doorlock system, which works with pincodes, RFID, remote conrols and over the Internet, is connected to the KNX/EIB bus system I also have in my house to control lights, shutters, air circulation, music and some other features. And the answer is no. Because, no joke, EICB/KNX, which seems to be the most spread "standard" for home automation, does not provide any security feature. no encryption, no authenication. If you get access to the 2 wires of a bus, then you can control anything which is connected to it.
Luckily, EIB/KNX installations are so incredibly expensive (my installation is a DIY one), that it will never spread on a large scale...
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