PSD3 and PSR: what changes for payment authentication teams?

TL;DR: PSD3 and the Payment Services Regulation will reshape European payment authentication by raising SCA requirements, formalising delegated authentication liability, and making eIDAS 2.0 credentials and the EUDI Wallet first-class instruments for payment trust, according to Namirial. The practical shift is from one-off compliance checks to a converged identity stack where verification, authentication, and transaction authorisation are governed together.

Editorial analysis by NHI Mgmt Group, based on content published by Namirial: “PSD3 and PSR: what the new payment services rules mean for authentication, signatures, and digital identity”.

Key questions

Q: What breaks when banks rely on SMS OTP as the only transaction authentication method?

A: Banks expose themselves to account takeover and transaction fraud because a stolen or relayed OTP proves only that a code was received, not that the session, device, or transaction is trustworthy.

Q: Why does delegated authority create more risk than simple authentication?

A: Authentication proves a subject presented a valid credential.

Q: How should payment teams prepare for EUDI Wallet acceptance under PSD3 and PSR?

A: They should treat wallet acceptance as an identity architecture change, not a feature toggle.

Practitioner guidance

• Harden SCA against phishing and interception Replace SMS one-time passwords for high-risk actions with phishing-resistant authentication methods that cannot be captured or replayed through basic fraud techniques.
• Map delegated authentication ownership Record every delegated SCA path, the third party performing it, the accountable PSP owner, and the evidence needed to prove correct execution.
• Plan for wallet-based identity acceptance Design payment journeys so EUDI Wallet credentials can be accepted as part of the authentication stack without creating a parallel verification process.

Bottom line: PSD3 and PSR move payment authentication away from weak factor checking and toward assurance quality, liability clarity, and identity-backed trust.

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