| 摘要 |
In one aspect, a method may be provided. The method may comprise creating a trip file in a database, the trip file corresponding to the trip and including traveler data corresponding to the plurality of travelers. The method may further comprise accessing the trip file from a mobile handheld device, the mobile handheld device to physically travel with the plurality of travelers on the trip. The method may further comprise checking-in the plurality of travelers by marking a traveler-present-indicator as present for each of the plurality of travelers that is physically present. The method may further comprise determining if any of the plurality of travelers is missing by comparing the traveler data and the checked-in plurality of travelers. The method may further comprise checking-out the plurality of travelers by unmarking the traveler-present-indicator for each of the plurality of travelers that is no longer physically present.
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