My stores are in very tech savvy towns where customers are always trying to see what their P D is. On several occasions, after writing it down the customers have said..."oh its 62". One time the customers saw the P D and cancelled the order. I have come up with a very simple way to combat this little problem..... Just take monocular P D and now ALL P D's are a 6 digit number. Example 290300 (59) or 310305 (61.5).