According to French digital rights advocacy group, La Quadrature du Net, the provisions "raise serious concerns over infringements of fundamental liberties," and violate the "right to security, right to a private life and to private correspondence" and "the right to come and go freely."
The group called it part of a "slide into heavy-handed security."
Cops in France have been granted the authority to remotely activate a suspect's cellphone camera, microphone and GPS, after the passage of a provision in a wider "justice reform bill" on Wednesday night.
Lawmakers defended the move - with Justice Minister Eric Dupond-Moretti insisting that the bill would only apply to "dozens of cases a year," while members of parliament inserted an amendment inserted an amendment which only allows the remote spying "when justified by the nature and seriousness of the crime" and "for a strictly proportional duration" after a judge has approved the surveillance.
Lawmakers also insisted that sensitive professions, such as journalists, judges, lawyers, doctors and MPs would not be legitimate targets, People's Gazette reports.
Last month, the Senate gave the green light to the provision of the justice bill, which would allow law enforcement to secretly activate cameras and microphones on a suspect’s devices.
Since 2015, when terrorist attacks rocked France, the country has increased its surveillance powers, and the “Keeper of the Seal” bill has been likened to the infamous US Patriot Act.
"We're far away from the totalitarianism of ''1984''," said Dupond-Moretti, adding "People's lives will be saved" by the law.