Jason Snell is right in his analysis of a possible stylus for the iPad. It may appeal to some customers, but is likely to be an extra option and not something that the majority of iPad users would go for:
I admit that I have a difficult time ginning up enthusiasm for this particular tech unicorn. While I’m sure that artists and other pen-oriented niches would love an iPad that was better at accepting pen input, I’m not sure how large those niches really are.
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Simon Spence/2015