Access Control Schema for Smart Locks using a Wifi Bridge: An exploration of a smart lock access control system based around the SimSim retrofitting smart lock.

Abstract

This paper presents an access control schema using a WIFI bridge for smart locks and explores its implementation in one such pair of devices. The schema outlines the interaction between a smart lock (SimSim), accompanying WIFI bridge (Freedom), a cloud server, and a group of users operating smartphones. The schema leverages AES256 symmetric encryption, Bluetooth Low Energy, and HTTPS communications to provide enhanced access control for short-term landlords participating in the sharing economy. These additional features include facilitating a larger quantity of users, 24/7 permissions management, 24/7 monitoring, all without requiring physical proximity to the app.