Using a Raspberry Pi and HomeAssistant software, the privacy-focused non-profit Guardian Project has developed a technique to apply Tor’s layers of encryption and network stealth to protecting your Internet of Things or Smart Home devices.
the Guardian Project turned a simple Raspberry Pi mini-computer into a smart hub running the open-source software called HomeAssistant software and acts as a so-called Tor hidden service, the same application of Tor that obscures the location of servers running dark web sites.