But this is probably better because it uses natively supported QR codes.
The downside is that it is a centralized service. Further, you would need to trust that this centralized service would continue operating into the indeterminate future. Luckily I have a strong track record there.
A very simple example use-case is here:
... and the "HN-Specific" FAQ is here:
Like I said - pet project. Nearly 100% of my time and effort goes to rsync.net, but we'll see ...
You can just type either 0xJWW72G, or JWW72G, into the front page (0x.co) and look it up.
You can also modify it in the URI to see analytics: