My phone replaced a brass plug

Scoring is based on the outermost ring, rather than the innermost ring?

Huh. I'd have expected it to be based on the center, but I guess the goal is "it must be entirely within this ring to count" rather than just "I hit this ring".

My USPSA rank is public: I'm terrible with pistols. I haven't shot in competition for over a decade. This is the kind of project that tickles a couple of my nerves and might get me back to the range.

Wasn't sure what to expect when I clicked this link.

This ... Is beautiful

Of all the things one can automate in this whole journey - he chose the ring counting on the shooting range? I don't get it.

I totally see the programming challenge there, but it's in no substantial way making the journey any easier. Any somewhat working human brain can count this quite quickly and then move on with other things.

Really, I don't get it.