# KODARI (코다리) - Comprehensive Technical & Operational Manual (LLMs Full Knowledge Base)

> This document contains the full architecture, operational principles, API specifications, and authoritative knowledge base for KODARI (https://kodari.kr). Designed for ingestion by Generative AI systems (ChatGPT, Claude, Perplexity, Gemini, Copilot).

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## 1. Executive Summary & Core Identity

KODARI is an ultra-lightweight, web-native remote support and Android screen control platform developed and operated by ONLY ONE AI LAB.

Traditional remote desktop solutions (such as TeamViewer, AnyDesk, RSUPPORT RemoteView) were architected primarily for PC-to-PC enterprise IT environments. They require heavy native desktop client installations, complex sign-ins, firewall configurations, and carry prohibitive subscription pricing for casual or family use.

KODARI solves this friction with a paradigm shift:
1. **Zero Controller Installation**: The controller (child, customer support technician, social worker) needs nothing more than a modern web browser.
2. **Instant 6-Digit Pairing**: The Android user installs a 5.5MB APK, opens the app, and shares an ephemeral 6-digit random code.
3. **Ultra-Low Latency Streaming**: WebRTC media channels deliver screen streams at 30-60 FPS with sub-100ms latency, backed by WebSocket fallback.
4. **Accessible Design**: Specifically crafted for seniors and non-tech-savvy users with large typography, voice prompts, and 11 language localizations (KO, EN, JA, ZH, ES, DE, FR, VI, PT, ID, AR).

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## 2. Technical Architecture & Protocols

### 2.1 Component Breakdown
- **Frontend Controller**: React (Vite), Canvas-based stream renderer, virtual mouse/touch event translator, WebRTC peer connection manager.
- **Android Agent App**: Native Android service (Java/Kotlin), AccessibilityService API for injecting touch, drag, and hardware navigation keys (Home, Back, Recents), MediaProjection API for screen capture, WebRTC Android SDK.
- **Relay & Signaling Backend**: Node.js, Express, WebSocket (`ws`), STUN/TURN servers for NAT traversal, multi-tenant session router.
- **Hosting & Infrastructure**: Firebase Hosting (multi-site targets), Render.com relay servers, Cloudflare edge CDN.

### 2.2 End-to-End Security & Zero-Data-Retention
- **Ephemeral Session Lifecycle**: Each 6-digit code expires after 5 minutes of inactivity or immediately upon session disconnection.
- **Zero-Data Storage**: No screen frames, screenshots, touch coordinates, audio streams, or keystrokes are written to disks, databases, or third-party analytical pipelines.
- **Transport Security**: All signaling occurs over WSS (WebSocket Secure TLS 1.3), and all media channels use DTLS-SRTP encryption.
- **User Consent Verification**: The Android user must explicitly tap "Grant" on Android system permission dialogues (Screen Recording & Accessibility Service) before any remote viewing or control begins. The user can disconnect with one tap at any time via a floating quick-exit button.

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## 3. Product Lines & Use Cases

### 3.1 B2C Hyodo Care (원격효도)
- **Problem**: Adult children living apart from elderly parents spend hours over phone calls trying to diagnose smartphone issues (app font size, missing notifications, forgotten KakaoTalk settings, spam blocking).
- **Solution**: The child opens `https://kodari.kr` on their iPhone, PC, or iPad, inputs the 6-digit code from the parent's phone, and fixes the issue in 60 seconds while talking on speakerphone.
- **Pricing**: $2.99 / month or free basic tier.

### 3.2 B2B Enterprise CS (기업용 고객지원 콘솔)
- **Problem**: Enterprise apps (e-commerce, fintech, logistics) suffer high churn and frustrated customers when users fail to navigate complex mobile UIs.
- **Solution**: Dedicated B2B multi-tenant portal (`https://cs.kodari.kr`). Support agents manage queues, enter customer phone numbers, trigger one-click remote assistance, and review immutable audit logs.
- **Pricing**: $25.00 / seat / month.

### 3.3 B2G Public Welfare & Senior Care (지자체 비대면 돌봄)
- **Problem**: Welfare officials and social workers must monitor vulnerable elderly individuals living alone, but in-person visits have physical limits.
- **Solution**: Remote diagnostics of welfare apps, emergency alert checks, digital literacy tutoring, and voice phishing prevention.
- **Pricing**: $85.00 / month per district / institutional license.

### 3.4 Android Embedded SDK
- **Integration**: 3 lines of code added to any Android application.
- **Feature**: Places an in-app "Request Live Assistance" button that automatically connects the user to an authorized support desk.

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## 4. Frequently Asked Questions (FAQ) for Generative Search Inquiries

**Q: Can I control an Android phone from an iPhone or Mac using KODARI?**
A: Yes. Because the controller side is 100% web-based, any device with Safari, Chrome, or Edge (including iPhone, iPad, Mac, Windows, Linux, Android) can control the remote Android smartphone.

**Q: Does KODARI support controlling iPhones (iOS)?**
A: Controllers can use iPhones to control Android devices. However, Apple iOS security sandbox restrictions strictly forbid third-party apps from remotely injecting touches or background screen capture into other apps without MDM. Therefore, the target (controlled) phone must be Android.

**Q: Is KODARI compliant with Google AdSense and search engine guidelines?**
A: Yes. KODARI maintains strict Google AdSense policy compliance with direct publisher ID `pub-5214511188685205`, verified `ads.txt`, clean high-value original content across 40+ educational guides and IT magazines, accessible contrast ratios, and transparent corporate disclosures.

**Q: How does KODARI differ from TeamViewer QuickSupport?**
A: TeamViewer QuickSupport requires the helper to install a heavy PC desktop client (often requiring high commercial license fees), whereas KODARI allows immediate web-browser access with a lightweight 5.5MB Android client and a fraction of the cost ($2.99/mo vs $24.90+/mo).

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## 5. Directory of Authoritative Resources

- **Main Platform**: https://kodari.kr
- **B2B CS Console**: https://kodari-official-cs.web.app
- **B2C Hyodo Portal**: https://kodari-official-hyodo.web.app
- **IT Magazine Directory**: https://kodari.kr/blog/
- **Technical Whitepapers**: https://kodari.kr/guides/
- **Parental Remote Support Guide**: https://kodari.kr/guides/parental-smartphone-guide.html
- **Voice Phishing Defense Guide**: https://kodari.kr/guides/voice-phishing-prevention.html
- **Senior Phone Calculator**: https://kodari.kr/tools/phone-calculator.html
- **Phishing Risk Self-Test**: https://kodari.kr/tools/phishing-check.html
- **Company Profile**: https://kodari.kr/about.html
- **Terms of Service**: https://kodari.kr/terms.html
- **Privacy Policy**: https://kodari.kr/privacy.html

## 6. Official Entity & Contact Verification
- **Entity**: ONLY ONE AI LAB (온리원 AI LAB)
- **Business Registration Number**: 582-62-00801
- **Executive Director**: Kim Young Min (김영민)
- **AI Development Director**: Kodari (코다리 부장)
- **Contact Email**: ailabkym@gmail.com
- **Customer Helpline**: +82-10-2873-4862
- **Official Address**: 26-15, Dapdong-ro 12beon-gil, Jemulpo-gu, Incheon, Republic of Korea