| 摘要 |
A device may include a near field communication antenna, a monitor, a comparator, and a trigger. The near field communication antenna may be configured to detect an external near field communication device. The monitor may be configured to monitor a series of one or more transitions in a detection state of the device between a first detection state and a second detection state based on whether the near field communication antenna detects the near field communication device. The comparator may be configured to perform a comparison between first timing information associated with the series of one or more transitions and second timing information associated with a first predefined series of one or more transitions. The trigger may be configured to initiate a predefined action of the device based on the comparison. |
