Visitors to cultural venues in France now must show a health pass or negative PCR test from the last 48 hours to gain access.
The new rule applies to cinemas, art galleries, libraries and museums with a capacity of more than 50 people and is expected to extend to cafes, restaurants and trains in August.
Legislation to formalise the system is being debated by the French government.
France has seen an uptick in scheduled vaccination appointments since President Emmanuel Macron implemented plans by decree. Four million appointments have been booked for August via online booking platform Doctolib.
46% of the population are now fully vaccinated, according to covidtracker.fr.