Open eCard

In case of an invalid eID-PIN the number of available retries x is returned in the Response-APDU of GENERAL AUTHENTICATE, which is 63Cx in this case.
See section B.11.2 of https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/TechGuidelines/TR03110/TR-03110_v2.1_P3pdf.pdf?__blob=publicationFile .
The value x must be evaluated and in case of x=2 the user may just enter the PIN again. If x=1 the PIN is suspended and the CAN needs to be entered first.
If x=0 the PIN is already blocked and needs to be reactivated with the PUK. More information about the PIN-management can be found in Section 2.5 of
https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/TechGuidelines/TR03110/TR-03110_v2.1_P2pdf.pdf?__blob=publicationFile and the attached picture.
Note that this information is available in structured form in the CardInfo file and may be used to provide a generic solution.

The retry issue has been fixed for EAC on a static basis. The next step is to use CardInfos with state tracking to determine the correct action when a PIN is incorrectly entered.
This is a long term goal, so the issue is moved to the long term vision version.