We are starting to see a number of new devices hit the market with a secondary screen built into the phone or a case that has an optional one. The Yotaphone, Pocketbook and Pixel QI have all offered a wide array of concept pieces that have failed to takeoff in a meaningful way. A new Kickstarter campaign is ongoing for a second generation InkCase that has hit their funding target a few days into the program.
Following the success of the acclaimed InkCase, the second generation InkCase Plus now packs more power as a modular second screen for Android smartphones. With the new ability to install apps, InkCase Plus has become the converged multifunctional second screen for E Ink devices; just like the smartphone for communication and personal devices.
The InkCase could be used as a secondary screen for your Android device or used as the primary one. There are a few core functions that this accessory excels at, maps, reading, images, SMS Messaging, pick up incoming calls, and controlling  your music.
InkCase Plus is a fairly interesting concept with physical buttons to allow for easy access to pickup a call or snap a picture. I think the future of e-Book Reading accessories is sound, but its important for the device to function autonomously and not exclusively rely on you having a smartphone.
Michael Kozlowski is the editor-in-chief at Good e-Reader and has written about audiobooks and e-readers for the past fifteen years. Newspapers and websites such as the CBC, CNET, Engadget, Huffington Post and the New York Times have picked up his articles. He Lives in Vancouver, British Columbia, Canada.