While Apple was busy touting the benefits of increasing the iPad’s overall size, iPad keyboard maker Brydge has been hard at work creating a keyboard for the iPad mini.

The BrydgeMini follows the same overall design of the BrydgeAir, the company’s keyboard for the standard iPad. Lacking from the smaller version, however, is the built-in speaker which I found to be a distraction anyways.
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https://www.macworld.com/article/3008658/brydgemini-review-keyboard-case-for-older-ipad-mini-models.html