![]() Here’s a quote from one of our diary-study participants “ I needed to start a WeChat group for work, so I created a group and added the people who are already my friends on WeChat. This new feature simplified a fairly complex process because it provided a substantial ease-of-use benefit over the status quo, it made users willing to try it. Group chat: Creating a group meant generating an associated QR code, and joining it was simply a matter of scanning the code.People can scan someone else’s QR code to add that person to their contact lists. ![]() An added benefit was that two persons could become WeChat contacts without knowing each other’s phone numbers. Because WeChat did not support searching for people by name, scanning a personal code saved both input effort and user memory, as users did not need to type anything, nor did they need to remember (or get access to) a user ID or a phone number. Adding a new contact: People could become WeChat contacts by scanning each other’s codes.QR-code scanning was, however, quickly adopted in WeChat because, early on, it was associated with two popular features, both still widely used today: In contrast, in China, WeChat’s mobile application has had an embedded QR-code scanner since 2012, so the millions of WeChat users don’t need to install any special app to have access to this functionality - they can simply take advantage of the preinstalled WeChat.īut that is not enough - WeChat has many other features that are hardly discoverable and rarely used by its customers. Thus, QR codes fall the ease-of-use test in the US: to use them, people will have to do some initial work to find an app and download it, and, later on, they will have to remember what this app is to use it for more scanning. Just taking a picture of the code with the phone’s camera won’t work. ![]() In the US, to scan a QR code encountered on the street, in a store, or in a magazine, you’d need a QR-code scanner - that is, you’d need to install a special application dedicated to this operation. QR codes and the shake gesture have met all these three criteria in China, but not in the US.
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