[thisjepisje]

Wouldn't it be fairly easy to have a machine operate in "fair mode" during testing, and in "unfair mode" after that? Timers, secret commands and what have you.

[sp332]

Yes, but the regulator takes their job seriously and the penalties are quite high.

[MereInterest]

The entire source code and hardware must be disclosed. If the binary does not completely match the official binary, then the machine is not compliant.

It is more than just black box testing.

[seanflyon]

This isn't something unimportant like voting machines; The inspectors do their due diligence.