i Register
In some senses, puncher is marked as slang, US. Watch for register when choosing this word.
noun
A person who punches (in a specified manner).
A person who keys data into a computer system.
A device for punching something, such as tickets.
This sewing machine works like a ticket puncher or a pair of pliers. Squeezing the two hand grips together operates the needle and the thread and material feeds.
A cowpuncher; a cowboy.