[Openid-specs-fapi] FAPI meeting request - Mobile app access

Ralph Bragg ralph.bragg at raidiam.com
Fri Jul 24 06:37:37 UTC 2020

Hi Anders,

Further to Nats questions, there is nothing stopping a confidential client being run on a mobile device. Indeed this is how a lot of Banks Mobile applications are written. With a confidential client on a mobile device there is nothing stopping the app from interacting with a providers APIs using the FAPI Security profiles.

Joseph calls this out explicitly in implementation guidance section however there are significant challenges for implementation of this model under PSD2. The use of qualified certificates for 'identification' makes this almost impossible for a TPP to do safely or at least in a way that would be appropriate from a risk point of view however, if a TPP wanted to do this they could.

Be interested to know where the specs technically don't work for confidential clients on a mobile.

From: Openid-specs-fapi <openid-specs-fapi-bounces at lists.openid.net> on behalf of Nat Sakimura via Openid-specs-fapi <openid-specs-fapi at lists.openid.net>
Sent: Friday, July 24, 2020 6:20 AM
To: Financial API Working Group List <Openid-specs-fapi at lists.openid.net>; Anders Rundgren <anders.rundgren.net at gmail.com>
Cc: Nat Sakimura <nat at sakimura.org>
Subject: Re: [Openid-specs-fapi] FAPI meeting request - Mobile app access


Certainly we can take it up as an agenda item but I would like to understand what you mean by FAPI methods. Could you please elaborate on it?

Nat Sakimura
Chairman, OpenID Foundation
2020年7月24日 15:04 +0900、Anders Rundgren <anders.rundgren.net at gmail.com>のメール:
Hi FAPIers,

Currently FAPI methods are only accessible by TPPs.

This may be "by design" but it also makes the API less universal and force banks to create competing APIs.

As an example some mobile wallets provide real-time account balances. This obviously requires a direct call to the associated bank.

Could we have a meeting on this topic?

Anders Rundgren
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