PINコード生成

安全な数字PIN——文字なし記号なし数字のみ。デフォルト4桁、6桁まで調整可。

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📋 When to Use PIN Codes

PINs are numeric-only codes ideal for: ATM/banking PINs, phone unlock codes, door access codes, and parental controls. Default 4 digits — the standard for most financial systems. Never use easily guessable PINs like 1234, 0000, or your birth year. For security-critical PINs, consider 6 digits instead of 4.

📊 Technical Breakdown — pin

  • Entropy: 4-digit: 10K combos, 6-digit: 1M combos
  • Crack time: Milliseconds without rate-limit
  • Security level: Rate-limit dependent
  • Best for: ATM, phone lock, door code

All calculations assume pin with mixed character types. Actual security depends on specific character selection.