Moving away from buttons on phones has lead to a higher level of design purity, but has also made life a lot more difficult for the blind or seeing impaired -- or anyone who doesn't want to look at their phone while texting. We've seen how solutions like the Brailliant-32 can let users interact with mobile devices, but that's hardly portable. Guust Hilte's device is. Looking like a cross between an egg and a rubber stamp, or perhaps the abdomen of a Cyclocosmia spider, it features a series of what Hilte calls gullies on
