No wait, no hassle, just put it in alpha at the beginning of the day and hold the toggle down for numbers, no wait for it to switch back and forth. Your brain is already programmed to remember a billion thing, Just remember to push the toggle and hold down for numbers, and up for alpha, lots easier. Except on pick up, to go from pick up to delivery ya gotta change it back. Like said before the other way workks too if you do metro where strets are numbers instead of names. You will get it, I feel it eliminated 20 minutes from my day, not that I care about numbers, I care about the frustration of pushing a million keys and getting that dreaded bbbbeeeppp. And I like to get home. You need two hands either way, let your fingers do the work. I find myself having to stop and concentrate at times, but after a month or two, you will do it in the dark, you will have to....its that time of year.