Passengers on trains across the UK had their emotions recorded by AI cameras without their knowledge, it has been revealed.
The images were sent for analysis by Amazon Rekognition software, which can detect emotions such as whether someone is happy, sad or hungry.
Network Rail took photographs of people passing through ticket barriers as part of a trial launched in 2022, according to documents obtained by civil liberties group Big Brother Watch.
The system, piloted at stations such as London Euston, Glasgow, Leeds and Reading, also recorded demographic details, such as a passenger’s gender and age range.
In the…