human
I've been hearing a lot about e-readers. What are they?
assistant
An e-reader is a device that allows you to read books electronically. It’s similar to a tablet or smartphone, except it has a screen that is designed specifically for reading. The most popular e-readers are the Kindle and the Nook, which both use a technology called e-ink. E-ink is a type of display technology that uses very little power, so it's ideal for reading.