Reusing a Nintendo Points Card After Redemption: Impossible

No. A Nintendo Points Card (Wii Points / DSi Points / Nintendo eShop Card) is single-use.

• Scratch off / reveal the 16-digit code.
• Redeem on Wii Shop Channel / DSi Shop / Nintendo eShop (3DS/Wii U/Switch).
• Code is consumed — server marks it redeemed. Cannot be reused, transferred, or refunded.
• Physical card is now trash / keepsake.

Historical Context

• Wii Points / DSi Points: Discontinued. Wii Shop (2019), DSi Shop (2017) closed. Unredeemed codes may be refunded via Nintendo Support (proof of purchase required) — but not reused.
• Nintendo eShop Cards: Current. Work on 3DS, Wii U, Switch (shared balance on linked Nintendo Account).

Treat like a gift card: one code, one redemption, done.