The phrase 'secret system' is correct and can be used in written English.
It is often used to describe something that is confidential or kept hidden. For example: "The government has a secret system in place for handling sensitive information."
Those who set up and financed this secret system don't want voters to know that information.
As Sipe observes, the bishops' "secret system" had abruptly been breached.
Of course, resistance to algorithms is difficult because we're up against a sophisticated, secret system.
To his great credit, Ladner has totally nailed the speed, with a secret system that allows staff to cook and sauce noodles in a jaw-dropping fifteen seconds.
Beijing is using a vast, secret system of advanced facial recognition technology to track and control the Uighurs, a largely Muslim minority group, The Times has found.
The malicious software, or malware, caught a ride on an everyday thumb drive that allowed it to enter the secret system and begin looking for documents to steal.
The ancient Greeks used "temple magic", letting heavy doors open by themselves via secret systems of pulleys, wheels, ropes and reservoirs and employing hidden tubes and secret passages to make the Sibyl whisper through the walls.
The subversive idea behind it was if you can reveal all of the secret systems and totems by which a portion of society keeps its elite status, you kind of pull the rug out from under them".
"We're talking about two different worlds -- one has strengthened the regimes and secret systems and dictatorship and acted exactly contrary to the demands of democracy and freedom," said Abdulkhaleq Abdullah, a political science professor at United Arab Emirates University.
They have human helpers and many secret systems to keep their existence concealed.
There remained the problem of getting the berries into clamshells a future iteration of the harvester will include that still-secret system, Pitzer promised.
