From food carts lining Jakarta’s raucous streets to wet markets in Indonesia’s most remote villages, one type of barcode is becoming ubiquitous.
The quick-response code, or QR, lets customers make payments by scanning it with their mobile phones. It’s fast, easy and cheap for merchants — applying for your own QR code costs less than $2 — helping it find widespread adoption among satay stalls and roadside sellers known as warung. Cash is making less of an appearance, and some shops won’t accept it at all.
