Question 1

What exactly do I get for the money?

Accepted Answer

Six STL files, generated from what you entered, plus a short redirect for each side and the scan counting behind it. You print them yourself.

Question 2

So I have to own a 3D printer?

Accepted Answer

Yes, or know someone who does. We do not print or ship anything — that keeps this at a few euros instead of a few dozen.

Question 3

What if a link changes later?

Accepted Answer

You change the destination in your dashboard and the printed code points somewhere new. No reprint. That is the entire point of the redirect.

Question 4

How do I print a two-colour plate on a single-extruder printer?

Accepted Answer

Load both files as two parts of one object. The slicer puts the colour change on the right layer by itself and pauses so you can swap the filament.

Question 5

Will the code scan reliably?

Accepted Answer

The generator checks every code by rendering the finished geometry and decoding it again, and it refuses anything below 1.2 mm per module — the point where cells merge in print.

Question 6

What happens to my scan data?

Accepted Answer

Only the code and the timestamp are stored. There is no way to identify an individual visitor, including for us.