The rest of this thread is worth a read. To summarize: very soon chipped cards that are swiped instead of chip-and-pinned will be far more likely to trip the fraud alarm.

You are right but you and I know the Square brand so I won't have a problem to use it but here in canada any time Banks give you a brand new card with smart chips , they tell you to stop using the swipe system because it's not as safe as the smart chips... Guess what!? my mom stops and refuses to use a swipe system of any kind....

Because the PIN is not meant to be shared, it is a lot easier for banks to deny all responsibility for any card fraud when using chip-and-pin in court, which is why they are so gung-ho in convincing people to use them.

Starbucks still uses the strip. Although or all new cards use chip and pin now and most retailers can still use the mag strip.