A: Why didn't you buy a bus ticket?

B: I have a tap card.

A: What is a tap card?

B: It stores money for me to use when I ride the bus.

A: Is it like a credit card?

B: It works exactly like a credit card.

A: How did the bus driver know you had one?

B: I tapped it on his ticket console.

A: I see. That is much faster!

B: Yes, and much more convenient.

A: Maybe I'll get myself a tap card.

B: You should. You'd save time and money.