Easy. Print icons/ideograms on tickets, in addition and preferably next to ticket numbers.
Print triangles for window seats, squares for middle seats, circles for aisle seats.
Print arrow up for modulo 4 numbered seats, arrow right for non-modulo 4 even numbered seats, arrow down for modulo 3 numbered seats, and arrow left for non-modulo 3 odd numbered seats.
Everyone gets two and only two easily identified symbols in addiion to their ticket number, which suffice for all of the methods outlined in the article.
Print triangles for window seats, squares for middle seats, circles for aisle seats.
Print arrow up for modulo 4 numbered seats, arrow right for non-modulo 4 even numbered seats, arrow down for modulo 3 numbered seats, and arrow left for non-modulo 3 odd numbered seats.
Everyone gets two and only two easily identified symbols in addiion to their ticket number, which suffice for all of the methods outlined in the article.