The Meaning Of Blockchain-Enabled Smart Locks

On this webpage, We will discuss The Meaning Of Blockchain-Enabled Smart Locks. Blockchain-enabled smart locks are a type of smart contract that decodes a whole lot of security issues and has the ability to be locked and unlocked depending on the variable of smart contracts. The Advantages Of Smart Contracts. Procedures On How One Can Build A Smart Lock. The LoTeX blockchain.

Definition Of Blockchain-Enabled Smart Locks

A Blockchain-enabled smart lock can be defined as a connected device that can be controlled through a digital device (e.g mobile phone). This aid in solving many security issues which can be opened or locked based on the state of the variable that is stored in a smart contract. Over the past few years, consumer-grade smart locks have increasingly become prevalent in most homes but vulnerable to issues of potential cyber security. These resulting issues of security can be solved through blockchain-enabled smart locks.  An incredible new business model which was previously impossible because of security issues was resolved by easily linking any form of payment method (e.g. oracles or tokens) with the state of the lock.

Versatility and security are counted to the standard smart lock concept, by the use of a smart contract as the bedrock logic layer in deciding if to open or lock the concept. For instance, the location could be tied to a digital identity, which makes it possible to track who is coming and going to help in creating temporary or entry codes. This is useful at home, in allowing guests or service people to enter, when the homeowner is not around, and it’s also applicable to new commercial offices, rentals, or hotels. One can program a lock for example to open as a result of paying rent or having a high-security multisign lock that requires a certain number of different addresses to approve the changing state.

The Meaning Of Blockchain-Enabled Smart Locks

Blockchain-enabled locks, apart from the programmability are much more untroubled than a traditional smart device, having the same digital benefits. The command to open and lock could be done at any place on the globe, and with the inherent security of blockchain, its collaboration and joint signatures are possible without needing additional security substructure. A blockchain-enabled solution also has a few downsides, however, being vulnerable or helpless to lose connectivity which depends on the access to decentralized network nodes. 

Losing your private key. Just like a mechanical or a manual lock could result in being locked out without any recovery mechanism. Also, there are potential issues of lack of privacy and processing time on a public blockchain. Despite the disadvantages of this potential. A blockchain-enabled smart lock could make novel business cases possible with its programmability and native connection with the token world.


Thinking why many people take blockchain to be a game-changer in the IoT space? Regardless, this instance describes how to build a very simple smart lock. Supported by a Blockchain smart contract in making some references around this topic.

It’s hardware.

Make use of a very basic solenoid-based electric lock. Which requires a DC 12V input to switch into the “open” state. Whereas a mechanical spring will push it into the. “close” state when it’s not powdered. A Raspberry pi Zero is small enough to fit into a supposed smart-lock case of a decent size. And more than enough to run the small script that monitors the blockchain.  Finally, the power supply to the lock is done by the 12V. And with the aid of a relay board to switch it on and off. Completing the hardware specs for this simple project.

The LoTeX Blockchain

The IoTeX Blockchain has a few nice characteristics and features. Which are very desirable for the smart contract infrastructure which are;

  • With an amazing 5 second transaction confirmation time, it is extremely fast which makes it perfect for devices automation.
  • Considering its transactions finality feature, the confirmation is 100%. Once the transaction is being confirmed in a block (i.e. there is no need to wait for more blocks. To increase their confirmation confidence against any possible blockchain forks). Which is necessarily needed if we are operating on a real-world device.
  • A smart contract is being provided whereby the IoT deals. With the automation of devices and instrumentation of things in the real world scenarios that will possibly involve deposits. And payments that are based on a few or less complex logic. This is also a nice obvious requirement.
  • The loTeX is extremely secured by proving to be one of the most secure networks in the blockchain space. Since the happening of the bootstrap of the first MainNet Alpha which was released in April 2018. The network has never experienced any form of relevant issue or downtime. To date, the network is operating smoothly likewise backed by over 60 worldwide block producers. And actively developed with many innovations orient which is for the loT( both the hardware and software).

The Advantages Of Smart Contracts.

To remotely operate on a smart lock to be used by a smart contract. One has to open an external network for an incoming connection. And talk directly to a smart lock which poses vast security concerns that are not easily handled. Without professional knowledge and a solid security policy, particularly if going to scale. 

 Making use of an intermediate server in the cloud is a more reasonable alternative. In holding the lock status that one actually qualifies. Whereas it is being controlled by Smart Lock to carry out the request. This option sounds like a nice idea but also poses concerns about their security. Resulting in about 99% serious hackings, therefore, making the risk still high. Even though the code use is as simple as one line of code. There could be not many benefits in using a smart contract painfully due to its execution. Into a blockchain contract changing everything. However, it provides us with the following;

The Meaning Of Blockchain-Enabled Smart Locks

  • Cloud service: The blockchain could be used as a cloud server to be able to access our homes remotely. Resulting in not opening our home network to the outside world.
  • Security: The only person allowed to execute a smart contract is the owner of the blockchain. (i.e. wallet) likewise operating the smart lock. Showing that the system is as secure as a blockchain account. With no successful attempt at cracking a blockchain wallet to date.
  • Uptime: Achieving theoretically 100% uptime depends on a blockchain. Compared to the best professional cloud service on a worldwide decentralized network of numerous independent servers. Designed blockchain counts which are considered resistant to hardware failures and attacks.
  • Censorship-free/tamper-proof: Due to the fact that our blockchain is decentralized and permissionless. However, no service provider or hacker would decide to close one account, stop one service or attempt with one’s code thereby altering its behavior.

Procedures On How One Can Build A Smart Lock

1. Configuration Of The Raspberry Pi Zero W

This is done through the integrated digital I/O that will directly drive the smart lock. To install the Raspberry OS lite Image and to configure the I/O pins it’s by 

  • i. Place the Micro-SD card into the slot of your computer
  • ii. Select Raspberry Pi OS(Other)> Raspberry Pi OS Lite (32bit). Use the Raspberry Imager tool, and then flash it to your card.
  • iii. Pull out and insert again your micro-sd card, open the folder /boot on the card. To create and save an empty file named ssh which enables ssh to connect to your Raspberry
  • iv. Then create a wpa_supplicant.conf file and paste the following code. Thereby replacing the placeholders with the name and password of your wifi network.
  • v. After carrying out the above command save the file and put the micro-sd card into the Raspberry card slot. Then connect the power to the Raspberry and turn it on
  • vi. Login using raspberry as the password with:ssh pi@raspberry.local 

You will be required to access your router web interface if this doesn’t work out. Thereby looking for the list of connected wi-fi clients and then locating. “raspberry pi” in the list taking note of its IP address. Replace the raspberry. local with the noted IP address. In the above ssh command making sure it’s always assigned the same IP by the router.

  • vii. Ensure the Pi system is up to date before going on its urge to run sudo apt-get update and sudo apt-get upgrade. To ensure your Pi system is up to date.Clone the iotexlab/iotex-arm GitHub repository from IoTeXLab Delegate and install the required package.
  • viii. On the raspberry configure the GPIO. The following script will enable GPIO14 basically.  (which corresponds to pin 8 on the Raspberry) likewise configures it as an output pin:

2. Configuration Of Hardware Devices

  • i. To configure the hardware, depending on your relay board use the female-to-female wires. To connect the Raspberry to the relay, whereas the position of pins may slightly vary.

Raspberry pin 4 (5V) -> Relay pin 1 – VCC
Pin 6 Raspberry(GND)-> Relay pin 4 – GND

Raspberry pin 8 Raspberry (5V) -> Relay pin 3 – IN1ii. Connect the relay output to the clock power supply. Basically by cutting the ground wire from the 12V power supply. And then putting the relay in the middle of the power line. Below is what the final wiring would look like: 

  • iii. To test if everything is working fine send 0 or 1 to the GPIO 14. To see the lock open/close or close/open depending if it’s wired on the NI or NC output of the relay;

echo 1 > /sys/class/gpio/gpio14/value

echo 0 > /sys/class/gpio/gpio14/value

We will discuss The Meaning Of Blockchain-Enabled Smart Locks. Blockchain-enabled smart locks are a type of smart contract that decodes a whole lot of security issues. And has the ability to be locked and unlocked depending on the variable of smart contracts. The Advantages Of Smart Contracts. Procedures On How One Can Build A Smart Lock

3. Construct The Smart Contracts

Using a smart contract to keep and toggle the state of our smart lock. In doing that we need a blockchain account:

  • I. For the loTeX Blockchain, download the official ioPay wallet using the desktop app;, launch the app and create a new account. Then in the network dropdown menu select word “Testnet”:
  • ii. Visit and input your newly created wallet address in other to obtain. Some IOTX tokens to be used for the transactions on the IoTeX TestNet:
  • iii. At open the loTex web Studio and paste the smart contract code: which is very simple and self-explicative!
  • iv. Click the “Compile” button in the Studio IDE, after compilation click the [ABI] button to copy the contract ABI, and then put the content of the clipboard in the ~/abi.json file. After completing this task, in the Environment field select “Deploy via ioPay” which shows in your ioPay account. Make sure to select the “Simple DoorLock” in the deployment section then click on the “Deploy Contract” button:
  • v. The ioPay will pop up with a request. At this point for signing the transaction: sign it and then wait for the blockchain to confirm it. Make sure that the TestNet network. Is selected and that you have some IOTX balance or else the transaction will be rejected: 
  • vi. After that go back to IoTeX Studio. You will notice that your contact is now listed under the “Deployed Contracts” section and you can also run test the functions. Now go to the log panel and copy the blockchain address that has been assigned to your contract:

Note to leave the Studio open, as we will use it to interact with the contract later.

4. Keeping Track Of Scripts:

To monitor the status of the smart- lock from the Raspberry Pi. Which is the only step left to drive the lock accordingly. By using the loTeX Ioctl command-line client as a simple step. You will find a binary built for the Rpi Zero included in the loTeXLab depositary which you’ve cloned above. Then copy it into our ~/bin directory which should include it, in the path:

cp iotex-arm/bin/ioctl-armv6l bin/ioctl
Then configure ioctl to interact with a IoTeX Blockchain Gateway, using the TestNet public gateway provided by the IoTeX Team

ioctl config set endpoint

# Test it by querying some TestNet info

ioctl config set endpoint

ioctl config set endpoint

# Test it by querying some TestNet info

ioctl config set endpoint

Now paste the code below to create our check state script. That will accordingly monitor the contract and the drive lock: 

nano ~/bin/check state 
# Paste the code of the checkState script and save

chmod +x ~/bin/checkState

5. Examining The Project

They test the project by moving back to the loTeX Studio IDE. And then using the UI to interact with the contract through 

  • i. Make sure that your ioPay walle on your contract account is open and unlocked.
  • ii. And lastly, in the IoTeX Studio IDE, look for the “Deployed Contracts” section. Then expand the SimpleDoorLock contract, and likewise try the toggle function. Wait for a few seconds, and then check your SmartLock.

We will discuss The Meaning Of Blockchain-Enabled Smart Locks. Blockchain-enabled smart locks are a type of smart contract that decodes a whole lot of security issues. The Advantages Of Smart Contracts. Procedures On How One Can Build A Smart Lock

 see the list of things to also learn:

  1. Blockchain Technology
  2. Defi
  3. NFTs
  4. DAOs
  5. Crypto
  6. Web 3.0
  7. Altcoin Tokenomics
  8. Metaverse
  9. Smart Contracts

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