Diagnostic software is beginning to require more and more authentication.

https://www.repairerdrivennews.com/2026/05/14/autoauth-certi...

You now need to be a "certified AutoAuth technician" using a "certified AutoAuth tool" (sure, like a $3000 SnapOn).

Or - some manufacturers ALSO require you to have NASTF Vehicle Security Professional access, which is another whole can of worms with insurance and business requirements.

https://support.nastf.org/support/solutions/articles/4300076...

Hyundai now requires you to have this stupid security professional certification if you dare try to service a modern Hyundai with a (lower cost) J2534 passthru tool instead of the official Hyundai service tool.

All of this still doesn't stop someone from sending packets direct on the CANbus to make a new key to someone's car, but it just makes it more miserable for the rest of us trying to work on the diagnostics of it all.