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IOST 3.0 | Documentation
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Getting Started

Start Guide

What is IOST 3.0?

Core Concepts

Blockchain Architecture

Layer 2 Fundamentals

RWA Fundamentals

Payment Infrastructure

DID Basics

RWA Solution

RWA Platform Overview

RWA Core Engine

Architecture

Asset Tokenization

KYC/KYB & AML

RWA Liquidity Engine

Summary

IOST 3.0 Introduction

System Architecture Overview

Three-Phase Development Strategy

Core Components

Asset Management System

Bond Separation Engine

PBDUSD Financial Tools

DUSD Stablecoin System

TMarket Activity Engine

Innovation & Applications

Advanced Feature Design

Institutional Asset Management

Yield Curve Arbitrage

Liquidity Planning & Optimization

Individual Portfolio Diversification

Roadmap

Roadmap & Development Plan

Future Vision

Oracle

RWA Bridge

EVM Compatibility

L2 Mainnet

Network Design

Architecture Overview

Technical Specification

Scaling Solutions

Security Framework

System Components

Component Overview

Data Availability Layer

Execution Engine

Settlement Protocol

Developer Guides

Wallet Integration

Connect to L2

Gas Fee

Benchmarks

Node Setup

Smart Contract Guide

Foundry

BlockScout

ThirdWeb

API Reference

Overview

JSON-RPC API

REST API

GraphQL

Websockets

Payment Solutions

Features Overview

System Introduction

Technical Architecture

Core Capabilities

Paypin Ring

Product Overview

User Experience

Security Features

Ring Hardware

Visual Gallery

PayFi Platform

Solution Overview

PayFi Nexus

Guardian Security

Yield Rewards

DID

Core Framework

Concept Overview

Protocol Architecture

Trust Framework

System Integration

Integration Overview

L2 Integration

RWA Integration

Payment Integration

Biometric ID System

Tokenomics

overview

Strategic Token Evolution

New Economic Model

Loyalty AirDrop

StakeDrop

Staking Model

FAQ

On this page

PayPIN Ring Design Gallery ​

Explore the elegant design and premium craftsmanship of the PayPIN Ring through our visual gallery. This showcase highlights the aesthetic details, material quality, and available finishes of this revolutionary wearable payment device.

Product Views ​

PayPIN Ring Design View 1
PayPIN Ring Design View 2
PayPIN Ring Design View 3
PayPIN Ring Design View 4
PayPIN Ring Design View 5
PayPIN Ring Design View 6
PayPIN Ring Design View 7

Wearable Experience ​

Experience the PayPIN Ring's ergonomic design that ensures all-day comfort and seamless integration with your daily activities.

PayPIN Ring on handPayPIN Ring in daily useMaking payment with PayPIN Ring

Technical Specifications ​

The PayPIN Node Ring combines cutting-edge hardware components in an ultra-compact form factor, delivering powerful functionality with exceptional energy efficiency.

Core Components ​

ModuleModel/SpecificationPhysical DimensionPower Characteristics
Secure ElementInfineon SLC372.5×2.5×0.5mm0.1μA standby
NFC ControllerNXP PN71503.5×3.5×0.6mm12mA working current
Main MCUAmbiq Apollo4 Blue4×4×0.7mm32μA/MHz
Optical SensorAMS AS7341L2.1×1.8×0.9mm850μA during measurement
BatteryLi-Po Ring BatteryΦ14×2.8mm25mAh capacity

Sensor Configuration ​

Optical Sensor Workflow ​

Optical Sensor Workflow

Capacitive Sensor Features ​

  • Detection Dimensions:
    • 8-channel ring capacitive array
    • Pressure levels: 0-3 (light touch/normal/heavy press)

Gesture Library ​

GestureFunction Trigger
Double tapTransaction confirmation
Long press (2 seconds)Emergency lock
Clockwise swipeMenu navigation

Security Features ​

Key Architecture ​

Security Key Architecture

Security Protection ​

  • Physical Protection:
    • Alloy shell with EMI shielding efficiency ≥30dB (1-6GHz)
    • Anti-tamper fuse mechanism: erases secure element keys when triggered
  • Communication Encryption:
    • BLE transmission using AES-CCM mode
    • NFC data packets with MAC verification
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