# Zero-Type Login (No Number Required)

One-click login — no typing required

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## Overview
Fastest login UX: WhatsApp/Telegram buttons directly with no phone input field. System auto-captures the number from the message.

### Implementation
This example uses the same ReOTP API:
1. Call POST /api/verify/init with phoneNumber (optional) and method (WHATSAPP/TELEGRAM/PREDICTIVE).
2. Start polling /api/verify/stream?id=<requestId> instantly.
3. On VERIFIED, execute your business logic.

### UI/UX Guidelines
- Design consistent with ReOTP: dark background (#05050A), Liquid Glass cards with backdrop-blur-xl, white/15 borders.
- Show a 120-second countdown to create urgency.
- Use clear single-action buttons (CTA) at each step.
- Support RTL/LTR via dir.

### Live Preview
Try the interactive simulation below to see the full flow.

## Interactive Demo

Demo type: example
Example ID: usecase-1
Title: Interactive Live Preview

See the live demo at: https://reotp.com/hi/docs/usecase-1-zero-type-login