Hacker News Reader

Yes, but they do cost money and effort to get. A 25-50 eurocent coin is probably equivalent.

The only thing that's useful about those things is that it's easier to get them faster.

Where I live it is always 1€ coins.

But leaving it on is a good way to avoid forgetting to it.

There’s ones with a “notch” in the coin part. So you unlock the cart, twist it, pull it out.