This page discusses the effectiveness of creating an interactive trailer for a book using AR.
The effects that AR can provide to creating interesting book “trailers” are limitless. From creating a lifelike rendition of a scene within a book, to providing accessibility for all users, there are a lot of benefits here.
The 3D environment and animations provide a literal at-a-glance overview of the book. If all books implemented something like this, book stores would become a lot more interesting to the younger generation, as well as boosting sales of the physical medium. There are a few possible issues here, however. This effect might prove to be too realistic for some. Imagine a book that contains non-PG13 content. Parents would not be happy if a child walked through a store and saw a depiction of mature theme. For another example, imagine a scary book that implemented a jump-scare type trailer. If someone with a heart condition walked past this book, it would not be healthy for them to be jump-scared. More broadly, walking into a store and seeing hundreds of different scenes at once may cause users to become distracted.
This effect would also cause issues with the book cover art. Some books look very similar which could cause the wrong trailer to appear. Additionally, some books may have too bland of cover art causing it to not be trackable by Vuforia. Manufacturers would have to go out of their way to make to make each cover (back and front) as noisy as possible.
The interactivity, at least for this project, came from having virtual buttons on the object that the user would then “press”. While this certainly has some “Wow” factor, there are some issues with it. Currently, Vuforia relies on objects being covered a certain percentage to determine if a button has been pressed. This leads back to the issue of having noisy covers to provide the most feature points. Additionally, Vuforia recommends that each button takes up 10% of the space. The buttons also cannot be placed in such a way that reaching a button covers up another button. This would mean that menus would have to be very basic and any complex trailer may require a lot of submenus. Buttons have the potential to provide some great interactivity, but they should be limited to simple and obvious functions.
Where I would argue that this AR trailer really shines is the option to add audio to a book. Imagine a user being able to place a book in front of their glasses and being able to hear the author narrate the first couple pages or the forward. Or image hearing an interesting noise and being lead to a book. Again, just like the visuals, this can be abused. Too many sounds or problematic sound mixing can lead to headaches and a loss of customers. Additionally there could be some sound triggers that may be triggering or troubling for some users. For example, war sounds heard by a veteran.
While having great potential, there are both technical problems and ethical problems associated with AR trailers. Essentially, a user has to trust that whatever will appear when they look at something, the developer was responsible enough to consider all factors and safeguards. A lot of the above problems could be solved by implementing a standard on things like: how far objects can appear from the book cover, how loud covers can be, and mandating that each cover have a rating so that only content suitable for the user wearing the AR glasses is shown.