Lockii

Smart lock device MVP
Web app homepage
Web app devices management

Inspiration

The global market for Internet of things (IoT) end-user solutions is expected to grow to 1.6 trillion U.S. dollars by the end of 2025. Smart devices can represent basically anything, spanning from smart houses keylocks like Lockii to grid interconnected solar panels.

Being able to interconnect all of these objects through a powerful and reliable blockchain like Neo that can automate operations with smart contracts will be a game changer and would open the doors to an illimitate number of applications.

What it does

Lockii uses the Neo blockchain as a store of state and proof of ownership over the NFT representing the smart lock. Thanks to a NFT NEP11 smart contract, the reliable state of the keylock is checked and used to decide whether to open or close the device.

How we built it

The whole system is composed by:

A Raspberry PI connected to a servo motor and a led. Here Lockii core code continuously run asking the Neo blockchain informations about the state of the device. When the state changes the motor is moved to open or close the lock and the corresponding status led is turned on/off.
An NFT smart contract used to manage the state of the device. Here each device corresponds to an NFT, so basically the whole system can support multiple device together and can also orchestrate them.
A frontend web app where the user can see its Lockii NFTs and manage them.

Challenges we ran into

Device hardware management
Device lifecycle management and interaction with the Neo blockchain
Orchestrate system components
Create the physical MVP

Accomplishments that we're proud of

Create a real life functioning MVP that interconnects Neo blockchain with a physical IoT device
Manage lifecycle of a physical device reacting to Neo blockchain state changes
NEP11 implementation possibilities

What we learned

Build a hardware device connected to the blockchain
Interaction with the Neo N3 blockchain
Create a real life MVP of an interactive smart device

What's next for Lockii

In the future the idea is to build a more general IoT library to be applied to other smart devices and open source it to attract more people to developing Internet of things dApps on the Neo blockchain.