A special kind of iron curtain came down across central Paris on Thursday, with the beginning of an Olympic anti-terrorism perimeter along the banks of the River Seine sealing off a miles-long area to Parisians and tourists who had not applied in advance for a pass.
The words on many lips were “QR code”, the pass that grants access beyond snaking metal barriers that delineate the security zone set up to protect the Olympic Games’ opening ceremony on July 26.
“I didn’t know it started today,” said Emmanuelle Witt, 35, a communications freelancer who was stopped by police near the Alma bridge while cycling across town.
She went on her phone to fill out the online form to get her QR code, unaware that the vetting process could take several days.
Those with the precious code, either on their phones or printed on paper, passed smoothly past police checkpoints at gaps in the barriers taller than most people.
Those without were mostly turned away, with no amount of grumbling and cajoling making officers budge.
“That’s too much, that’s over the top, that whole thing is a pain,” said Nassim Bennamou, a delivery man who was denied access to the street leading to Notre Dame cathedral on his scooter.
“Even the GPS is confused, I have no idea how I’m going to work today,” he added.
While authorities announced the code system last year and have been meeting local residents for months to explain the restrictions, not everyone was aware.
Officers explained to visitors without the pass how to reach Paris monuments without going through the restricted zone.
“We had no idea we needed a QR code,” said Takao Sakamoto, 55, who was denied access to the Eiffel Tower near the Bir Hakeim Metro station.
Visiting from Japan with his wife, he took a photo of the tower from a distance, behind fences and police cars. “That will do,” Mr Sakamoto remarked with despair.
On the other hand, visitors who were lucky enough to come across officers who leniently let them pass without QR codes and others who had equipped themselves with them, were treated to the sight of near-empty riverside boulevards that, in normal times, heave with traffic.
“There’s no one around,” sang a happy cyclist on a street he had largely to himself.
With police seemingly everywhere, another man walking past a riverside café with fewer than usual customers loudly quipped: “You can leave your money and mobile phones on the tables, there’s definitely no thieves.”
“It’s surreal, it really feels like we’re the only ones here,” said Sarah Bartnicka, 29, from Canada.
Enjoying a morning jog with a friend, she took a selfie with a police officer on the deserted Iena bridge to capture the moment.
Paris has repeatedly suffered deadly extremist attacks, most notably in 2015. Up to 45,000 police and gendarmes and 10,000 soldiers are being deployed for Olympic security.
“I understand why they’re doing this,” said Carla Money, 64, an American who managed to pass the barriers with her family.
Some business owners inside the security zone grumbled that sharply reduced foot-fall would hurt their bottom line.
“They’ve locked me up like a prisoner,” said Raymond Pignol. His restaurant, L’Auberge Cafe, near the Pont Neuf that spans the Seine, is just inside the metal fencing.
The perimeter came into effect early on Thursday and will last through the ceremony.
Paris will hold the opening of its first Games in a century on the river rather than in a stadium, like previous host cities.
Most of the river security measures will be lifted after the show.
Officers were under instructions to be polite and patient as employees on their way to work and others dealt with the perimeter and the passes for the first time.
But Paris police chief Laurent Nunez said that after the initial 24 hours of being accommodating, officers would apply the rules much more firmly, with no more looking the other way for those without QR codes.