Sottini, Riccardo and Jesus, Vitor (2025). Smart Homes and Blockchains: A Smart Door Lock Operated by a Smart Contract. Cloud Computing and Data Science, 6 (1),
Abstract
The integration of blockchain technology into numerous domains has demonstrated its ability to address transparency, security, and cost-effectiveness. Furthermore, with its association with cryptocurrencies, it allows seamless integration with payment systems. We report on a project that investigates the practical elements of using blockchains and smart contracts in Cyber-Physical Systems (CPS) in multi-party scenarios and involving the delegation of (digital) keys being handed over temporarily. Specifically, we implemented a smart lock system for a conventional front door whose digital “keys” were stored and managed (e.g., digitally handed over) via smart contracts over a public blockchain (Polygon, specifically). Through our evaluation, we found that modifying permissions takes around 5 seconds, primarily due to the time required to update the blockchain, whereas checking for access is instantaneous.
| Publication DOI: | https://doi.org/10.37256/ccds.6120256035 | 
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| Divisions: | College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies > Software Engineering & Cybersecurity College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies Aston University (General) | 
| Additional Information: | Copyright ©2025 Vitor Jesus, et al. This is an open-access article distributed under a CC BY license (Creative Commons Attribution 4.0 International License) https://creativecommons.org/licenses/by/4.0/ | 
| Publication ISSN: | 2737-4092 | 
| Last Modified: | 31 Oct 2025 16:18 | 
| Date Deposited: | 09 Oct 2025 07:14 | 
| Full Text Link: | |
| Related URLs: | https://ojs.wis ... ticle/view/6035
                            (Publisher URL) | PURE Output Type: | Article | 
| Published Date: | 2025-01-22 | 
| Accepted Date: | 2025-01-15 | 
| Authors: | Sottini, Riccardo Jesus, Vitor (  0000-0002-5884-0446) | 
 
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