If I was to tell you that there was a new book reader that had infinite battery life and could be read in the brightest sunlight you might be interested. If I added that its technology was such that it would never become obsolete in a way that made it impossible or even difficult to access you might be even more interested. If I finally told you that it did have a sort of DRM - Digital Rights Management - but one that was fair to the writer and the reader such that you could lend the content to another reader or sell the content to recoup some of your investment then you might be queuing up to buy one.
We hope so.
Of course what is being described is the old fashioned much derided paper book.
It is a brilliant invention and for technical content it so far has no equal.
We love ebook readers and yes, being partisan for a moment, we love the Kindle, but after struggling for a long time with its variable page layout we have had to admit that the fixed formatting of a paper book is just superior for technical books. If things change, or if we ever find a reasonable solution, then we will reconsider the position.
For the moment, however, the paper book rules and if you want to read the full content of any of our books it will have to be on paper. We do make most of the content available on the web, on I Programmer and IoT Programmer, but the definitive edition is the print version.