Digitail (DIGITAiL), phone or e-mail when you receive a message to move the tail of the slimy. Of course, you can move it manually, not just through a dedicated app. As I said earlier, I can move in response to reception or notifications. The tail itself is in the form of a mechanical arm, so if you change the cover, you can choose a variety of tail shapes.
Of course, the downside is that you can not see yourself because of the tail, but the fact that the tail moves each time an email or phone comes in can be pretty to the people around you. Thanks to the many people who have thought of it, this product has been successful in campaigning through Kickstarter, a crowdfunding site. More information about the product can be found here .