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Figure 1-5. Author self-portrait in Finger Painting app in iBooks
HTML5 Canvas, EPUB, and Ereader compatibility
So, as we've seen, HTML5 Canvas is incredibly powerful and versatile, but the $64K
question that's probably in your head is, “Which major ereading devices are currently
compatible with <canvas> content?” Unfortunately, the answer at the time of writing
(September 2011) is “Only one.” Currently, the iBooks reader for iPad/iPhone/iPod
touch is the only major ereader that supports and can render <canvas> content, which
means that if you want to embed <canvas> apps directly in your EPUBs, you're likely
limiting the audience of your ebook quite significantly. That said, here are a couple
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