Hong Kong protesters wary of Chinese surveillance technology

In this photo taken on Wednesday, June 12, 2019, protesters flee after police fired tear gas during a massive demonstration outside the Legislative Co

In this photo taken on Wednesday, June 12, 2019, protesters flee after police fired tear gas during a massive demonstration outside the Legislative Co

In this photo taken on Wednesday, June 12, 2019, protestors wear masks and helmets and hold umbrellas to protect their identities and provide cover fr

In this photo taken on Wednesday, June 12, 2019, protestors wear masks and helmets and hold umbrellas to protect their identities and provide cover fr

In this photo taken on Wednesday, June 12, 2019, protestors wear masks and helmets to protect their identities near the Legislative Council in Hong Ko

In this photo taken on Wednesday, June 12, 2019, protestors wear masks and helmets to protect their identities near the Legislative Council in Hong Ko

In this photo taken on Wednesday, June 12, 2019, protestors use umbrellas for cover as they gather near the Legislative Council in Hong Kong. Young Ho

In this photo taken on Wednesday, June 12, 2019, protestors use umbrellas for cover as they gather near the Legislative Council in Hong Kong. Young Ho

In this photo taken on Wednesday, June 12, 2019, protestors wear masks and helmets and hold umbrellas to protect their identities and provide cover fr

In this photo taken on Wednesday, June 12, 2019, protestors wear masks and helmets and hold umbrellas to protect their identities and provide cover fr

In this photo taken on Wednesday, June 12, 2019,a protester reacts as she is tackled by a riot police officer near the Legislative Council in Hong Kon

In this photo taken on Wednesday, June 12, 2019,a protester reacts as she is tackled by a riot police officer near the Legislative Council in Hong Kon

In this photo taken on Wednesday, June 12, 2019, protesters wear protection gears and use umbrellas to shield themselves as they gather near the Legis

In this photo taken on Wednesday, June 12, 2019, protesters wear protection gears and use umbrellas to shield themselves as they gather near the Legis

HONG KONG (AP) — Young Hong Kong residents protesting a proposed extradition law that would allow suspects to be sent to China for trial are seeking to safeguard their identities from potential retaliation by authorities employing mass data collection and sophisticated facial recognition technology.

Agnes, a second-year college student who declined to give her surname, said she donned a face mask as soon as she left a subway train in the downtown Admiralty district to join Wednesday's overnight protest by pro-democracy demonstrators.

The semi-autonomous Chinese territory has installed thousands of security cameras but the data is mostly kept private. In mainland China, the government openly uses the technology to track down people considered politically unreliable, particularly among Muslim Uighurs and other minority groups.