Support
Email appsupport@qtco.ms with the app's name, your phone model and what happened. We usually answer within two business days.
Before you write
Security Key Bridge
- The computer doesn't see the key: check Bluetooth is on, then run setup again to pair (⋮ → Settings → Run setup again).
- The tap isn't detected: unlock the phone first (Android doesn't read NFC while it's locked), and hold the card to the middle of the phone's back for a second.
- "Cancel and try again on the computer": the computer picked FIDO2 or U2F before you tapped; a retry uses the right one.
Secure NDEF Filesystem
- Forgotten password: it can't be recovered, by design; the data on that tag is gone.
- New phone: tags protected with the phone's hardware keys (TEE or StrongBox) can only be read on the phone that wrote them.
- "Tag too small": larger tags (NTAG216, DESFire) hold more; files are compressed.
NFC Typer
- Nothing is typed: keep the app open, and check the computer is connected (the name under "Tap a tag").
- Wrong characters: set Settings → Keyboard layout to the computer's layout, then use Type a test.
Security issues
Found a security problem? Please email appsupport@qtco.ms with the details first, so we can fix it before it's public (security.txt).