id: input_otp
label: OTP Input
family: family-c-forms
category: Form
intent: Capture one-time password codes
description: One-time password input
composable: false
capabilities:
required_parts: []
optional_parts: []
tags: ["input-otp", "otp", "code", "verification", "sms", "token", "pin"]
keywords:
pain: OTP inputs require complex state sync across multiple fields
promise: OTP slots and active state managed automatically
why: |
InputOtp distributes value across slots using ActivityState. Each slot reflects position and focus without manual logic. This guarantees synchronized UI and input state.
rules: ["CR-001", "CR-004"]
use_cases: ["2FA codes", "verification inputs"]
related: ["form", "input", "input_group", "textarea", "field", "label", "checkbox", "form_error_summary"]
file: input_otp_ui.css
tokens: input-otp-*, input-*, forms-*, size-*, space-*, radius-*, font-*
foundation: spacing, size, radius, typography, motion
states: ["active"]
island: input_otp_boundary.rs
pillar: form
badges: ["SSR Safe", "Hydration Safe", "Token Driven", "Deterministic API", "Zero Drift", "Island Architecture"]
before: |
// ❌ Typical
// multiple inputs with manual focus handling
after: |
// ✅ CanonRS
view! {
<InputOtp length=6 />
}
boundary_type: init
block: []
blocks_primitives: [flex, stack]