# The Hub: Sentrix

**Hub-Centric Communication Model**

Hangar DAO’s proposed home automation system revolves around a local central hub, the Sentrix,  bridging the gap between local smart home modules and the Solana blockchain:

1. **Local Communication**: Sentrix connects to smart home modules via secure Wi-Fi, facilitating rapid data exchange within the home network.
2. **Blockchain Relay**: Sentrix acting as an intermediary, the hub processes user commands received via the blockchain and relays them to the respective modules, when required.
3. **Data Aggregation**: Sentrix collects data from modules and transmits it back to users through the blockchain, ensuring secure communication and authentication.
4. **Processing Power**: Sentrix will provide processing power to the peripheral modules, where complex data processing is required to enhance module functions. To enable simpler and low-cost peripheral modules, programmable logics or AI-models may be off-loaded to the hub, as required.

**Web3-Enabled Interfaces**

Users interact with the Sentrix and interconnected modules through wallet-connected mobile applications and Web3-enabled websites:

1. **Wallet Integration**: Users authenticate and manage their systems using Web3 wallets, such as Phantom or Solflare, ensuring secure access.
2. **Applications**: Intuitive apps will be developed to allow users to issue commands, monitor their systems, and receive notifications in real-time. Additional browser-based platform will provide smart-contract based management tools for security-enhanced controls, access logs and detailed system analytics.

**Security Measures**

Hangar DAO will implement advanced security protocols on Sentrix and its interfaces to safeguard user data and system integrity:

1. **End-to-End Encryption**: All communication between the hub, modules, and blockchain is encrypted using industry-standard cryptographic techniques.
2. **Decentralized Authentication**: Wallet-based logins reduce dependency on centralized credentials, enhancing user privacy and security.
3. **Immutable Logs**: Blockchain’s immutable nature ensures that all interactions are securely recorded and cannot be tampered with.

**Solana’s Unique Contributions**

Operating within the Solana ecosystem provides Hangar DAO with several key advantages for building Sentrix hardware and user base:

1. **Seamless Integration**: Solana’s ecosystem supports efficient deployment of smart contracts, enabling advanced features such as automated command execution and transaction validation.
2. **Scalability**: Solana’s infrastructure supports millions of active users without compromising speed or security.
3. **Low Energy Footprint**: Compared to traditional blockchains, Solana’s energy-efficient consensus mechanism aligns with sustainable practices.
4. **Decentralized Operations**: Eliminating reliance on centralized servers reduces risks of data breaches and ensures continuous operation.
5. **User-Centric Design**: Wallet-connected interfaces empower users with full control over their systems and data.
6. **Real-Time Interaction**: Solana’s high-speed transactions enable seamless real-time control and updates for smart home devices.
7. **Cost-Effective Scaling**: Minimal transaction fees allow the system to grow without burdening users financially.
