Well, yes, the standard numeric keypad is active. This contains, besides the numbers, 20 additional interpunctation characters. Ideally there would be only the 10 digits, backspace, decimal point and enter for the numeric fields. This would leave more space for each key, resulting in bigger keys, making it easier (and faster) to enter the data between filling up and hitting the road.

This Palm app gives a nice example of what I'm after. (Scroll down to "Data Entry" and look at the "Easy Input"-Panel.)