6. AI, Biometrics & Passkeys for Payment Security
The technologies in 2026 that keep payments secure consist of artificial intelligence, biometric authentication and passkey functionality. Together, they enhance fraud detection, minimise false declines and facilitate smoother authentication for businesses and customers alike.
Current Landscape
Artificial intelligence is at the centre of payment security for past two years. You have systems in place that detect fraudulent activity with astonishing accuracy, resulting in far fewer false positives while catching an even higher percentage of actual fraudulent activity.
You also benefit from machine learning models that assess behavioural patterns in real time, empowering you to approve more legitimate transactions without delay.
Biometric authentication is now common across mobile payments and in-store payments. Millions of consumers authenticate their transactions via fingerprinting, facial recognition, palm vein scans and more every day.
Neural network models achieve precision rates near 97%, making biometrics one of the most trusted authentication methods available to you.
Behavioural biometrics provide an additional layer of protection by understanding someone's typing speed, swipe pattern or how they hold their device. This minimises false positives and bolsters risk assessment without requiring additional steps from your customers.
Adoption rates over the past few years indicate that users have become comfortable relying on biometrics to protect their digital identities.
Passkeys are becoming the new password. They work by using public key cryptography, where private keys remain on your local device, rather than on central servers that hackers can breach.
Compliance-accredited standards like FIDO2 and Visa's Payment Passkey adhere to rigorous requirements like PSD2 Strong Customer Authentication, ensuring they've gone through proper checks to make transactions as safe as possible for you and your customers. FIDO2 is the standard that makes a passkey count as a genuine authentication factor rather than a convenience feature, and Visa's Payment Passkey applies the same approach inside card checkout, which is what allows a scheme to accept it in place of an SMS code.
All of this reaches e-commerce checkout through 3D Secure 2, the protocol that carries authentication data between merchant, acquirer and issuer. It is where AI risk scoring and SCA exemptions decide whether a given transaction is challenged or waved through, so the protocol is the practical control point for how much friction your customers actually experience.
Implementation Priorities
When prioritising the implementation of new technology for safeguarding payments, the first step should be integrating AI-driven fraud detection into your digital transformation strategy. This guarantees higher fraud detection with higher approval ratings than superfluous transaction declines that frustrate your customers.
When implementing biometrics, for example, choose multi-modal biometrics. Combining a camera facial recognition feature with behavioural readings or palm scans creates a much firmer line of defence against fraudulent activity and identity theft.
Providing more than one authentication option also helps accessibility for various user demographics.
You must also make passkey authentication a priority. Passkeys offer phishing-resistance and quicker sign-ins compared to passwords and OTPs. They decrease reliance on SMS or email verifications that can easily be hacked or intercepted.