If you do not pay very close attention to the park...

If you do not pay very close attention to the parking meters on eg mineurplein you lose euro 10 because option all day parking is right next to option to add 10 euro cent time.
Older people and people with bad eyes have plenty of problems with this client-unfriendly system.
As long as these meters are used, there are complaints about it.
A little empathic ability had prevented this system from being used.