What if you could be convicted with secret evidence you cannot see nor contest?

All defendants have a right to review the evidence before them. When software applications produce a conclusion, then the software source code must be re-viewable by the defense.

The government argues it can use secret software against a defendant – software that may very well be defective (think Neil Ferguson’s Imperial College London’s secret disease modeling code that ignores all modern software engineering practices).

Can secret software be used to generate key evidence against a criminal defendant?

Source: EFF and ACLU Tell Federal Court that Forensic Software Source Code Must Be Disclosed | Electronic Frontier Foundation