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Join the revolution


Join the Felix Developer community and unlock the potential of seamless, contactless payment integration. Whether you’re a seasoned developer or just starting your SoftPOS journey, we have the tools and support you need.


Processing partners

Tap to Pay SDK

Payment integrations
made easy

Connect your POS app up to Felix’s tap to pay, to accept NFC payments in your mobile app. Powered by our own cloud kernel, we support all major contactless methods and payment processors, right out of the box.

Portal API service

Enable devices
in an instant

Don’t wait for hardware deliveries. Enable your merchants to accept payments in an instant with our SoftPOS boarding APIs. All we need is an MID and a TID from a supported payment processor. The rest is up to you.

API call

					std::string transactionOutcome = FelixAPI::getInstance().doTransaction(transactionType, transactionAmount);

API response

					doTransaction Success { 
    "Response": { 
        "StatusCode": 0,
        "TransactionReference": String,
        "PaymentData": String,
        "ReceiptData": String,
        "AttestationResult": {
            "Status": String,
                "Accepted": String,
                "ActionRequired": String,
                "Class": String
                "Date": String
The Felix advantage​

Why ISV partners
choose Felix

Felix helps SoftPOS vendors integrate tap to pay in their app without the development costs or certification bottlenecks.

Fast and convenient (Tap to Pay)

Card scheme and PCI approved

Secure, fraud prevention (EMV card present)

Turnkey solution for faster time to market

No delta security evaluation (full SDK)

Use case flexibility for different verticals

One SDK for all major acquirers in North America

Hardware / OS flexible developer options

Accepted payment methods
Discover coming soon

Latest articles


The rapid rise of SoftPOS

In the ever-evolving landscape of the payment industry, the rise of SoftPOS, specifically the revolutionary Tap to Phone technology, has

Felix at NRF 2024

Felix Payment Systems specializes in cloud-based payment acceptance and has developed a software solution that turns hardware devices (smartphones, tablets,


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Start your SoftPOS journey today

Get in touch to book a quick demonstration of Felix Tap to Pay SDK and learn how we can help boost your sales and launch in new markets.