If you don't have a printer to print the coupon you can also write down the coupon number and the security number on a piece of paper or your phone and show this to the venue.

如果您没有打印机来打印优惠券，您还可以凭写在纸上或者手机里的优惠券编号和安全码到该商家兑现。

youdao

In Chicago, for example, the call will go over a 10-digit phone number, but it'll show up to the operator exactly the same way it would in New York.

ENGADGET: The Engadget Interview: Jeffrey Citron, chairman and CEO of Vonage

They had been told to dial a cell phone number at noon to learn where to show up:a drab conference room at the Golden Nugget.

FORBES: The Avengers

When people see one of these ads on an app, they can click to pop up a map, which will show all the Groupon deals that are nearby, along with the business address, phone number, etc.

FORBES: Find Groupons Near You With JiWire Mobile Ads