Technology is evolving in such incredible pace. For instance, computers/ laptops have been playing irreplaceable roles in our daily lives. With that being said, emergence of emails enables the application of the concept of sustainability. Nevertheless, I am wondering, do computers really make our lives more sustainable? In my work, I impose the idea of projective keyboard. If we can have projective keywords, a great amount of materials that is used in the production of keyboards in this era could be saved. In addition to that, people are seeking electronic devices in more portable configuration without functions being compromised. Therefore, the projective keyword can bring us both convenience and sustainability.