Despite having at least four other devices with Kindle apps on them at any given moment at home or work, my reading weapon of choice is the Kindle Paperwhite.
I rip through books on it, lose myself in them fast and deeply. Two reasons: first, there is less pull from the web and apps; second, the little “time left in book” statistic in the bottom-left corner seems to help me focus. The effect of the latter is a little like using the Pomodoro technique - it gives a sense of manageable scale and progress through the text. There may also be that effect some drivers report of their satnav’s estimated time of arrival at a destination – the temptation to beat the computer’s prediction.
I thought about this after reading this passage in Clive Thompson’s excellent Smarter Than You Think:
For my money, there’s a far more immediate danger to the quality of our in-brain memory: that old op-ed page demon, distraction. If you want to internalize a piece of knowledge, you’ve got to linger over it. You can’t flit back and forth; you have to focus for a reasonable amount of time, with mental peace. But today’s digital environment rarely leaves you any such peace.