Adding the timer based QR code

[nayakrounak]

Problem Statement
We want to add a timer-based QR code in Inji, which can show a QR code that can

• Auto-store credentials shared by residents after they perform selfie authentication.
• Display the credential for 5 seconds and then reshow the QR code.

Steps

• A relying party wants to use the application to collect the credentials of residents who avail the relying party's services
• The relying party keeps the application stationed at a place for the residents to use after opening this QR code.
• The resident scans the QR code
• The resident performs a selfie authentication and shares the credential
• The resident's credentials are shown on the relying party's app and are saved automatically
• The credential on the UI disappears after 5 seconds and the QR code is shown on the relying party's app.

Additional context
This feature was available in an older version of Inji. Now, this feature can be added to the current version as well. A video of the implementation is available here.

2a4ed261-14de-453c-956c-1a2043b75649.MP4

[ravikp]

For this to happen, we need to have verifiable credentials that needed to be as small as possible for them to transported within 5 seconds. What happens if there is a VC transfer that in progress?