Good Health Pass compliant implementations must offer a paper based alternative, based on standard QR code formats and interoperable with their digital counterparts.
An all-digital solution to health passes is simply not an option when it comes to combating a public health crisis. Simple, easy-to-use paper credentials must be an option so those in low-resource settings or those who do not own – or wish to use – a mobile phone are not excluded.
However paper credentials have numerous challenges when it comes to identity binding, including the potential for fraud and counterfeiting. Like digital credentials, they need to be verifiable as authentic, unaltered, and issued by an authorized issuer. And they need to include at least enough identity binding data so they can be manually verified against an individual’s other identity documents (if available).
One solution is a printed QR code that can transmit a digitally signed credential payload. However such a solution comes with its own set of challenges, including:
Many of the challenges described in this paper apply equally to both paper and digital credentials. Thus, the primary goal of this Good Health Pass Collaborative workstream is to enable implementations to produce paper credentials that are interoperable with – and contain as many benefits of – their digital counterparts as possible.
Key Interoperability Questions (from GHPC Interoperability Blueprint Outline V2)
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