It's true. And the article's example actually doesn't have a signup. But often demonstrating value to the user will require multiple accesses and you don't wa

It's true. And the article's example actually doesn't have a signup. But often demonstrating value to the user will require multiple accesses and you don't want them to lose the data they've already entered. It's probably better to force a signup then potentially lose everything the end user has done in your app. For a mobile app, you can store data locally or on a server keyed to the user without any potential for loss and without a signup.