This is literally how the Dutch election system has worked for years, ever since they stopped with the voting machines (which were admittedly a mistake).

The recent change has to do with how the votes were tallied. Basically the way they were transmitted wasn't really tamper-proof, and there wasn't a system in place to determine the difference between the result of the ballot station and the publicly announced result.

Of course they've 'solved' this by replacing the electronic tallying system. Which I can't help but feel is a very misguided way of fixing those problems.