BEIJING • Cameras that are built into Tesla's cars are not activated outside of North America, the electric carmaker's Beijing unit said in a statement on Weibo yesterday.

Even in the US, vehicle owners are able to choose freely whether or not they want to turn on their cameras, Tesla said, noting that it has a world-leading network security system to protect users' privacy.

Tesla chief executive Elon Musk was forced to defend the company's position on cameras last month after Bloomberg reported that its cars have been banned from Chinese military complexes and housing compounds because of concerns about sensitive data being collected by cameras built into the vehicles.

Speaking virtually to a conference, Mr Musk said that if Tesla ever used its cars to spy in China, or anywhere, the company would get "shut down everywhere".

"If a commercial company did engage in spying, the negative effects to that company would be extremely bad," he said at last month's China Development Forum, a gathering organised by a unit of the country's State Council.

Tesla, like many other carmakers including General Motors, uses several small cameras, mainly located on the outside of the vehicle, to help guide parking, autopilot and self-driving functions.

Most Tesla models also have an interior camera mounted above the rear view mirror that can be used to detect whether a driver is looking at the road, looking down at their lap, wearing sunglasses, or looking at something else entirely.

In the United States, Tesla has started using cars' internal cameras to monitor what it calls FSD (full self-driving) beta testers, or Tesla owners who have volunteered to test out the company's driver-assist capabilities.

BLOOMBERG