The Telematics Infrastructure (TI) is the digital backbone of the German healthcare system – and it is currently undergoing the biggest transformation in its history. Under the banner of TI 2.0, gematik is gradually replacing the hardware-centric architecture of connectors and cards with an internet-based, identity-centric model. For DiGA manufacturers, this is not a distant infrastructure question, but the framework in which GesundheitsID, ePA, and e-prescriptions operate.

This article explains what changes with TI 2.0, how the sectoral identity federation works, and what this specifically means for connecting your application.

Since January 2024, it has been mandatory for DiGA manufacturers to enable their users to authenticate via the GesundheitsID (Health ID). What sounds like a manageable "just another login method" turns out to be one of the more complex integration projects on the way to the DiGA directory – because behind it is not just an OAuth flow, but the entire sectoral identity federation of the telematics infrastructure (TI 2.0).

This article explains what the GesundheitsID is, why it is mandatory, how the integration works technically, where the real hurdles lie, and how you provide the proof required by the BfArM.