A vast and contentious network of facial recognition cameras keeping watch over Moscow is now playing a key role in the battle against the spread of the coronavirus in Russia.
The city rolled out the technology just before the epidemic reached Russia, ignoring protests and legal complaints about sophisticated state surveillance.
Since last month, thousands of Muscovites have been confined to their homes for 14 days of compulsory quarantine after returning from virus-hit countries, being in contact with those infected or diagnosed with mild symptoms.
Police have logged their details and warned them that sneaking out into the city of 16 million residents and daily visitors could lead to a five-year jail term or deportation for foreigners.
"We are constantly checking that this regulation is being observed, including through the use of automated facial recognition systems," Mayor Sergei Sobyanin wrote in his blog in February.
The Russian capital already had a tight network of 170,000 security cameras, set up in streets and metro stations throughout the city over the past decade.
Around 100,000 have now been linked to artificial intelligence systems that can identify people being filmed. The remaining cameras are due to be connected soon.
