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US09123031B2 Attendance tracking via device presence 有权
通过设备存在进行考勤跟踪

Attendance tracking via device presence
Abstract:
Attendance tracking via mobile devices may be provided. Once a meeting begins, a plurality of mobile devices present at the meeting may be identified. An attendance report for a plurality of attendees at the meeting may be provided based on the presence of each of the identified plurality of mobile devices.
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