Just Say 'No'

Ever think about the buttons you push as you fill up your tank?

Start with 'Credit' or 'Debit/Atm' (Unless you're paying cash...that still happens.)
Zip code or PIN (Number pad wear is pretty even. 'Enter' shows a bit more wear. 'Clear' isn't used much.)
Car wash today? Y/N (Looks like most people choose 'No'.)
Print Receipt? Y/N (Looks like most people don't need one.)

And it looks like very few people have pushed 'Help'.

I'm on the lookout for a number pad with heavy wear on just a few numbers.