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    • Company3 min read

      2019: Year in review

      In 2019 we've launched with AMEX, gone live in North America and grown our team internationally. What's next?

      By Sam Leslie-Miller – Head of Operations
    • Loyalty2 min read

      3 reasons retailers love card-linked loyalty

      Keeping customers coming back is hard. Card-linking can help retailers create more effective customer loyalty programmes.

      By Niamh Cassidy – Head of Content
    • Product Updates2 min read

      Series A funding, public product roadmap and more updates

      Series A, why we're making our Product Roadmap public, and more product updates.

      By Marie Volpe – Product Marketing Manager
    • Unscripted3 min read

      Unscripted: Cristian, Senior Developer at Team National

      Fidel was built by Developers, for Developers. Here's what they have to say about implementing and using our API.

      By Niamh Cassidy – Head of Content
    • Card-linking0 min read

      What is card-linking?

      What is card-linking, and how can it drive value for your business? Our infographic lays it out.

      By Niamh Cassidy – Head of Content
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    © 2025. Enigmatic Smile Ltd trading as Fidel. Fidel API uses a proprietary tokenization system and does not store any card numbers.
    All API requests use TLSv1.2 with end-to-end encryption. Fidel API receives transaction authorization messages
    typically within seconds of a successful authorization event.

    © 2025. Enigmatic Smile Ltd trading as Fidel. Fidel API uses a proprietary tokenization system and does not store any card numbers. All API requests use TLSv1.2 with end-to-end encryption. Fidel API receives transaction authorization messages typically within seconds of a successful authorization event.

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