| CPC H02K 33/18 (2013.01) [H02K 33/16 (2013.01)] | 19 Claims |

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1. An apparatus, comprising:
a first magnet;
a second magnet;
a coil positioned between the first magnet and the second magnet;
a spacer coupled at one end to the first magnet, coupled at an opposite end to the second magnet, and configured to arrange the first magnet on one side of the coil and the second magnet on an opposite side of the coil; and
a cap coupled to the spacer over the first magnet,
wherein the first magnet, the second magnet, the coil, the spacer, and the cap are part of a first button, and wherein the apparatus comprises an array of buttons including the first button.
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