I am writing to express my opinion on facial recognition technology in place across China and any similar roll-out in Hong Kong (“ Facial recognition data leaks are rampant in China as Covid-19 pushes wider use of the technology” (October 8).

Facial recognition can also apply to automated temperature measuring, as under the current pandemic. Covid-19 has changed our daily routine: having our temperature checked is common in public places, with forehead thermometer and infrared thermal imaging machines ubiquitous. Non-contact scanners or kiosks can offer a mix of biometric facial recognition, mask detection and infrared body temperature scanning. This technology makes it easy for businesses or communities to screen and track down symptomatic patients and contain coronavirus outbreaks.

However, although facial recognition benefits us during the pandemic, its use has sparked concern about data security among Chinese citizens, as you have reported. The idea that facial recognition data could be misused is shocking but it is a fact, and it is not hard to see why a law professor in Beijing sent out legal letters of objection when her residential neighbourhood decided to install such a system.

I am reminded of the Hong Kong government’s plans to install 400 multifunctional smart lamp posts, unveiled in July last year. The project, which was implemented during the extradition bill movement, further fuelled public distrust of the government. Some radical protesters even destroyed several of the smart lamp posts. Government officials should be aware that Hongkongers’ fear of being monitored will prompt strong resistance to any such plans. Last year’s protests proved that it is unsustainable for the government to keep ignoring public opinion.