A German district court has rejected an arrest warrant that was based largely on a match generated by an AI-powered facial recognition system. According to the judges, algorithmic results alone are not sufficient grounds for detention. The case involved a suspected shoplifter who had been identified through the Federal Criminal Police Office’s facial recognition system.

The court criticized the lack of transparency surrounding the software, including missing information about algorithms, training data, and potential error rates. Judges also accused investigators of relying too heavily on artificial intelligence while neglecting traditional forms of evidence such as witness statements, DNA traces, or expert reports. The ruling could significantly affect how results from such AI systems are used in future investigations.