Since most travelers of all sorts today use credit cards and debit cards almost exclusively, you've probably noted that many businesses, especially gas stations, ask for the billing 5 digit zip code for the credit card. For us lower 49'ers that's a no brainer. But what does a traveler from Ontario, Montreal or British Columbia do? Their postal codes are 6 units...for example, this postal code from Surrey, British Columbia: V3N4R1. 
Just learned a tried and true way for our Canadian visitors to enter an acceptable 5 digit # into the keypad when requested. Use the three numbers in the code and add two 0's. The postal code above would be entered as 34100 . This saves time and a trip into the gas station when you'd rather just pay at the pump. Welcome to the US to our Northern neighbors and thanks for the tip Barrie.
