Get the template
One sheet of US Letter paper. A 10×10 grid for the 95 printable ASCII characters, four registration marks at the corners, and a light box around each cell so you know where to write.
Printing
- Any home printer. Black ink.
- Plain white US Letter paper.
- No "fit to page" or "shrink to printable area" — print at 100% scale so the registration marks land in the right spots.
- One-sided. Don't trim or crop the page.
Writing
- Sharpie (or another thick black marker). Skip ballpoint and gel pens — thin strokes produce skinny, hard-to-read fonts.
- One character per box. Center it. Stay roughly inside the box but don't sweat the edges.
- Close your loops. Open "0" and "o" become "U".
- The faint gray box borders are for you — the pipeline ignores them.
Next: take a photo
Lay the filled sheet flat, shoot square-on with your phone, then come back here to upload.
I have a photo → upload it