1- (4 points) Elect your own mental model. Write down how you think contactless cards work- where customers 'wave' their debit or credit card over a card reader instead of typing in a pin by answering the following questions:

• what information is sent between the card and the card reader when it is waved in-front of it?
• what is the maximum amount you can pay for something using a countactless card?
• how many times can you use a contactless card in a day?
• can you use your smartphone to pay in the same way? if so, how is that possible?
• what happens if you have two contactless cards in the same wallet/purse?
• what happens when your contactless card is stolen and you report it to the bank? what does the bank do?

2- (2 points) Ask two other people the same set of questions. Analyze the answers. Do you get the same explanations? What do your findings indicate? How accurate are peoples mental models of the way contactless cards work?

3- (2 points) What other ways might there be for paying for purchases instead of using case, debit or credit cards?

4- (2 points) How might you design a better conceptual model that would allow users to develop a better mental model of contactless cards?