| 摘要 |
A device may include a display and at least one electromagnetic radiation source configured to emit electromagnetic radiation not visible to a user through an upper surface of the display. The device may also include a number of sensors configured to detect electromagnetic radiation that is reflected from the user's finger or a stylus contacting the upper surface of the display. The device may further include logic configured to receive an indication from at least one of the plurality of sensors that a contact was detected and process the contact.
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