Wii PIN Code: It's Parental Controls, Not on Console

The Wii has no hardware PIN sticker. The only PIN is the Parental Control PIN (4-digit) you set during initial setup.

If You Forgot It

1. Wii Settings → Parental Controls → "I Forgot"
2. Answer your secret question (set at creation).
3. If that fails: Nintendo's PIN Reset Tool — Enter console serial number (bottom sticker) on Nintendo's site → receive master key via email.

Alternative (Legacy)

On original firmware, a specific date/time combo (e.g., 2000-01-01 00:00) could bypass — patched in later updates.

No other "registration code" or "system PIN" exists.