The number of coronavirus tests booked through the ‘test for entry’ portal trebled in the week before the CoronaCheck app became compulsory for most indoor venues.

Stichting Open Nederland (SON) said 211,000 tests were booked in the seven days to Sunday, with the largest number on Saturday, September 25, the day coronavirus checks replaced social distancing. In the previous week, when the pass was only required for outdoor events such as concerts and football matches, 65,000 bookings were made.

Anyone entering a bar, restaurant, nightclub or sports stadium has to show a QR code on entry to prove they have been vaccinated, tested negative in the last 24 hours or recovered from an infection less than six months ago.

The first weekend of the new rules brought some glitches and teething troubles, including a number of distributed denial of service (DDOS) attacks that put the system out of action for part of Saturday evening.

Queues formed outside several venues as punters waited for their test results, but local mayors said the first weekend had passed off largely without incident. The fine weather allowed people to drink on outdoor terraces, where coronavirus checks are not required.