  Internet of Things (IoT)-based smart home applications are rising in
popularity. However, this trend attracts malicious activity, which causes
cost-efficient security to be in high demand. This paper proposes a low-end
design that reinforces the security of a home network. It uses private
blockchain technology and localization via RSSI-based trilateration. We
investigated the benefits of private blockchains over their public counterpart,
and we improve the precision of the localization algorithm by testing it
against different wireless technologies. The results conclude that using a
private blockchain with a WiFi-based communication system produces the most
efficient iteration of the proposed design.
