The 16 hashish-selling coffeeshops in Maastricht are to introduce a new biometric control system to stop minors entering the premises – and customers buying more than the permitted five grammes of soft drugs a day, ANP reports.

Customers will first have to show a passport or other ID card, which will be checked through a computer linked to the national police database. In addition, customers will be photographed and their fingerprints taken.
The coffeeshop owners association, VOCM, said the system meant they would meet city council requirements on keeping juveniles out.