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This repository contains the open source code for the Bouncer CardScan product.

CardScan is a relatively small library that provides fast and accurate payment card scanning.

CardScan is the foundation for CardVerify enterprise libraries, which validate the authenticity of payment cards as they are scanned.

Unit Tests




  • Xcode 11 or higher
  • iOS 11 or higher (but the scanning view controllers require iOS 11.2 or higher to run)
  • iOS 13 or higher for name and expiry extraction


This repository contains a demonstration app for the CardScan product. To build and run the demo app, follow the instructions in the demo documentation.


Follow the installation instructions documentation for installing CardScan into your app.


Sam King, Jaime Park, Adam Wushensky, Zain ul Abi Din, and Andy Li


This library is available under paid and free licenses. See the LICENSE file for the full license text.

Quick summary

In short, this library will remain free forever for non-commercial applications, but use by commercial applications is limited to 90 days, after which time a licensing agreement is required. We're also adding some legal liability protections.

After this period commercial applications need to convert to a licensing agreement to continue to use this library.

More detailed summary

What's allowed under the license:

  • Free use for any app for 90 days (for demos, evaluations, hackathons, etc).
  • Contributions (contributors must agree to the Contributor License Agreement)
  • Any modifications as needed to work in your app

What's not allowed under the license:

  • Commercial applications using the license for longer than 90 days without a license agreement.
  • Using us now in a commercial app today? No worries! Just email and we’ll get you set up.
  • Redistribution under a different license
  • Removing attribution
  • Modifying logos
  • Indemnification: using this free software is ‘at your own risk’, so you can’t sue Bouncer Technologies, Inc. for problems caused by this library

Questions? Concerns?

Please email us at or ask us on slack.


A library for scanning credit and debit cards




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