British authorities have ramped up the use of facial recognition, artificial intelligence and internet regulation to address crime and other issues, stoking concerns of surveillance overreach.
The case was the first challenge relating to the treaty, which aims to reduce small-boat crossings of the English Channel by migrants, to reach London’s High Court.
Migrants trying to cross to Britain from northern France on a small boat last month. More than 30,000 people have made such crossings so far this year.
The fatal shooting of Charlie Kirk has intensified consideration about potential threats, experts said. British authorities had already made extensive security plans.