The counting and tabulating of votes is the cornerstone of any democratic system of government. To allow anyone to count the votes in secret is probably the most dangerous act that can be perpetrated on American democracy.
From the article:
A Florida appeals court has upheld a lower court decision that denies requests for an independent source code audit of voting machines used by Florida's 13th district, which suffered election irregularities in a highly controversial congressional race. The appeals court has chosen to support a lower court decision which asserts that forcing voting machine maker Election Systems and Software (ES&S) to provide source code access to independent security auditors would amount to "gutting the protections afforded those who own trade secrets."