Beijing's long -distance bus drivers are required to wear electronic bracelets with their mental and physical state monitoring functions.

The move was initiated by the Beijing Public Transport Group run by the State, aiming to ensure the safety of passenger trips.

However, legal experts expressed concern that this device could violate the driver's privacy and put them overly pressure.

A bus driver in Beijing, China.

About 1,800 bracelets were distributed to bus drivers on inter -provincial and highway routes from September 21, Beijing Daily newspaper reported.

The new request was issued after the bus accident in Quy Duong city, Guizhou province, southern China, killing 27 people and 20 injured last week, when they were on their way to a center.

The bracelet has the function of monitoring body temperature, heart rate, respiratory rhythm, blood oxygen concentration, level of exercise, blood pressure and sleep.

Bus drivers working in Beijing's Thongzhou District and some central routes have participated in this equipment test from the beginning of June.

Wang Congwei, Director in charge of network security issues at Jingsh Law Firm in Beijing, said that this decision seems to stem from growing concern to public safety, for cases.

The yellow bus with a crushed head was pulled by a truck after the accident in Guizhou province on September 18.

But we have to consider whether it is really necessary to collect so much personal information of the bus drivers, she said.

Wang also questioned whether the authorities had enough time to intervene if the wearable device detected abnormalities, even if the data was collected in real time.

Calvin Ho Wai-Loon, Associate Professor at the Faculty of Law, Hong Kong University, note that the accuracy is also a problem.

It is necessary to consider the reliability and accuracy of such devices when reporting on the health and emotional status of the wearer because if they are not correct, they can lead to unnecessary inconveniences, even