Depending on how long his will is, qr codes might work. A single qr code can store up to 4296 alphanumeric characters, which is about 2.5 pages worth of single

Depending on how long his will is, qr codes might work. A single qr code can store up to 4296 alphanumeric characters, which is about 2.5 pages worth of single space text. This is with a 177x177 cell qr code; not sure how many of those you could reliably fit on a single sheet of paper while maintaining readability but its probably in the double digits, especially if you can print on both sides of the sheet. If you pre-compress the text data, you might be able to get a few hundred pages of text.