mDL wide scale rollout works be using the trusted computing element that is part of your phone and enrollment would be the same as obtaining a driver’s license in the first place.
There is no physical card - there is an attestation that only an enrolled device can hand out with revocation support in case of security flaws.
Is it going to be absolutely secure? No. The cost just needs to be high enough that it becomes inaccessible to the vast majority of adolescents.
Theft of your parents phone becomes a lot easier attack vector but phone biometrics/password requirements will thwart that for most parents.
There is no physical card - there is an attestation that only an enrolled device can hand out with revocation support in case of security flaws.
Is it going to be absolutely secure? No. The cost just needs to be high enough that it becomes inaccessible to the vast majority of adolescents.
Theft of your parents phone becomes a lot easier attack vector but phone biometrics/password requirements will thwart that for most parents.
This doesn’t need to be 100% fool proof.