This week I added the final interaction to the prototype. Based on the feedback I had gotten on the prototype demonstration I decided to add a way for the users to delete the message instead of sending it, if that is something they wish. During the prototype demo I also got confirmed that the throwing interaction was an appropriate metaphor, based on this I decided that the delete metaphor should be the opposite, namely drop the ball instead of throwing it upwards. This, however, turned a little more difficult than anticipated since it required the accelerometer installed to know the difference between a throw and a drop. By studying the output values registered when performing these various task, it became apparent that they behaved differently from each other. The throw slowed down at the top of the throw before it falls down again, while a drop has only a quick stop of the acceleration. In the end, I managed to make it work.
Because of the time restriction and the restriction I won't be able to conduct a user testing to confirm if this last interaction is the best way to delete the message. A different metaphor might be even better than the one I have chosen but hopefully it will be easy for the user to understand and interact with.
Since the prototype is almost finished, I will start to make the website for the exhibition. I have already some ideas of the design that I want to create for the website and hopefully it will turn out as good as I have imaged. Building a website is just fun in my opinion so this is something that I look forward to.