License
Using the app
The project owner grants users a non-exclusive right to install Key369 and use it to lawfully manage their own codes. A subscription provides access to the stated features for the paid period and does not transfer rights to the app’s name, design or source code.
Open-source components
ZXing Core 3.5.3 is used to read QR codes and is distributed under the Apache License 2.0. Notices and the full license text are included in the app. Rights to these components are governed by their own licenses.
Algorithms
TOTP is based on RFC 6238 and uses HMAC with SHA1, SHA256 or SHA512. HOTP from RFC 4226 is used as the calculation foundation. Standalone HOTP accounts and Google Authenticator bulk export are not supported in this version.
Copyright
© 2026 Key369. These license terms do not limit mandatory user rights or rights granted by third-party component licenses. Questions: 369apps.studio@gmail.com.
jsQR · Web
The web app uses jsQR 1.4.0 to read QR codes under Apache License 2.0. The license text is included with the web app.
Key369 app documents, version 1.8.5. For data, payment and account deletion questions: 369apps.studio@gmail.com.