Member of the European Parliament Patrick Breyer took the European Commission to court to find out how an AI-powered EU-funded lie detection system was developed and tested.

Breyer had initially requested ethical assessments and other information from the EU Research Agency (REA) on the lie detection module of iBorderCtrl following a 2019 investigation by The Intercept which found that the technology was unreliable, having incorrectly identified four out of sixteen honest answers put to it as false. 

Breyer also pressed the Commission on whether the technology discriminates against certain groups of people, including people of colour, women, the elderly, children, and people with disabilities.

The MEP was refused access to the information requested on the grounds that releasing them could undermine public security and jeopardise 'commercial interests'. Breyer sued the European Commission to gain access to the documents, and to information on controversial trials conducted for the technology.