The Netherlands has around 400,000 people who live below the radar and cannot be traced by the authorities or companies, according to research by RTL Nieuws.

These ‘ghosts’ cost the government and companies €100m every year because they cannot be found.
The tax authorities have 40,000 untraceable people on its books who still owe money. And bailiffs sent to recover money on behalf of companies report increasing numbers of ‘ghosts’ who do not live where they say they do.
In Amsterdam alone, 80,000 people have no known address, RTL says.
By law, everyone who lives in the Netherlands is required to register their address with their local authority.