Using a Bluetooth-connected E-Ink screen with its own independent power supply, the inkCase i6 allows the back of your phone to become…a second screen for your iPhone.
Time, date, message notifications, battery and a host of other info is displayed in a clear format that’s visible even in bright sunlight. However, this also allows the user to read text (including ebooks) without draining the battery of their phone, as well as make use of running/cycling apps without worrying about sun glare. So, not so pointless after all.
Learn more about its full functionality here, along with a link to make a purchase.