https://www.techdirt.com/articles/20190114/17224241389/amazon-dash-buttons-ruled-illegal-germany-making-it-too-easy-to-buy-stuff.shtml

You can count me among those who don't see the value in those Amazon Dash buttons that got plenty of attention a few years back, allowing those who had the little single-button devices to re-order some consumable product with the push of a single button. Even if lots of people made fun of them at launch, Amazon has expanded them to many more brands. So, even if I don't see the value, it appears plenty of people do. Except, in Germany, they're now illegal, because apparently some people are upset that they make things too easy to order.

The ruling came after a regional consumer protection watchdog brought a case against Amazon, arguing that the Dash buttons violate laws that say shoppers should know what they are paying at the time of any transaction.