| 摘要 |
A device includes a touch-sensitive display having a first location associated with a first threshold and a second location associated with a second threshold. A sensor is configured to detect depression of the touch-sensitive display by detecting a force exerted at a location on the touch-sensitive display The force exerted effects a characteristic of an optical signal. The characteristic is compared to the first threshold when the force is exerted in the first location, and the characteristic is compared to the second threshold when the force is exerted in the second location.
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