Last updated: 5 May 2026
Checkify uses open-source software and third-party libraries to provide privacy-first identity and human verification features.
This page lists key third-party components and license information used by Checkify products, including the Checkify mobile app, web services, and WordPress plugin.
The Checkify mobile app is built with Flutter and uses open-source Dart and Flutter packages.
Package license information for Flutter and Dart dependencies is made available through the app’s open source licenses section where supported by the package metadata.
Examples of packages used by the Checkify app may include:
Checkify may use a bundled MobileFaceNet-compatible TensorFlow Lite model for on-device face matching or verification.
Used for: on-device biometric comparison and verification support.
Source: https://github.com/foamliu/MobileFaceNet-PyTorch
License: Apache License 2.0
License text: Apache License 2.0
The Checkify WordPress plugin includes QRCode.js to render QR codes locally in the visitor’s browser.
Source: https://github.com/davidshimjs/qrcodejs
License: MIT
Used for: rendering QR codes locally in the browser. The Checkify WordPress plugin does not use an external QR code generation service.
Checkify connects to Checkify services to create and verify human verification requests.
For information about how Checkify handles data, please see:
For questions about open-source licenses or third-party notices, contact: privacy@checkify.me