The Problem
NFC tags can fail for various reasons - wrong placement, interference, phone settings, or encoding issues. Quick diagnosis saves time and ensures your NFC deployment works reliably.
Who This Is For
- Anyone whose NFC tags are not working
- Users experiencing inconsistent reads
- Businesses troubleshooting deployment issues
- Developers debugging NFC applications
Quick Decision Rules
- 1Tag does not scan at allCheck phone NFC is enabled, try different position
- 2Tag scans inconsistentlyLikely interference, try moving tag or checking surface
- 3Tag on metal does not workNeed anti-metal tag
- 4Tag worked before, now failsMay be damaged or content corrupted
- 5Only some phones workCheck compatibility and phone NFC settings
- 6Wrong content appearsRe-encode the tag
Common Mistakes to Avoid
- Phone case blocking NFC antenna
- Tag placed over phone NFC antenna incorrectly
- NFC disabled in phone settings
- Tag damaged by bending or scratching
- Expecting tags to work through thick materials
Frequently Asked Questions
Possibly. Check if the tag has been physically damaged (bent, scratched, or exposed to extreme conditions). Try reading it with an NFC diagnostics app. If the tag is detected but content is wrong, try re-encoding it.