Uploaded July 2026 | Updated September 2026, 3 weeks ago

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Get the complete app playbook → https://cwb.sh/book?r=yt

I turned a $10 NFC sticker into an anti-cheating lock for my React Native habit tracker, then hid it in a park so my streak only counts when I actually show up.

Resources mentioned
- Work with me or get one-on-one help: beto@codewithbeto.dev
- Download Kujun App: apple.co/4f4fRKJ
- Full technical breakdown: https://codewithbeto.dev/blog/nfc-habit-verification-react-native
- Code with Beto MCP: https://codewithbeto.dev/blog/introducing-cwb-mcp
- Best Claude Skills for Mobile Development: https://codewithbeto.dev/blog/best-claude-skills-for-mobile-development

youtu.be/REEt7nX6x-0

My Products
• Pro Access — get access to everything: https://cwb.sh/pro?r=yt
• React Native Course: https://cwb.sh/rn?r=yt
• Platano — AI app template: https://cwb.sh/platano?r=yt
• Book — From Idea to App Store with Claude Code: https://cwb.sh/book?r=yt
• Inkigo — AI Tattoo (iOS): https://cwb.sh/inkigo?r=yt
• Quick Push — test push notifications (macOS, $4.99): apple.co/4tvT4wF

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Timestamps
00:00 Intro
01:01 Why NFC Makes Cheating Harder
01:42 The Anti-Cheating Habit Plan
02:24 How NFC Tags and NDEF Work
03:26 Building the NFC Feature in Expo
06:34 Pairing and Testing the Tag
08:39 Code Walkthrough
10:05 Resources

#reactnative #nfc #claude