Many restaurants here offer a bonus point program - you tap your phone number into the touchscreen of their POS system, and then you get a customized message fr

Many restaurants here offer a bonus point program - you tap your phone number into the touchscreen of their POS system, and then you get a customized message from the restaurant on your Kakao. Kakao accounts are affiliated with a phone number, so similar to WhatsApp, you will get friend suggestions based on your phone number address book and similar.