| 摘要 |
<p>Embodiments of the present invention safeguard the privacy of a traveler while simultaneously tracking the traveler's location for emergency purposes. Two or more vectors are derived from a vector that indicates the traveler's location, and the derived vectors are sent to different destinations. An individual derived vector by itself is insufficient to reconstruct the traveler's location vector. However, the derived vectors together may be processed to reconstruct the location vector. Accordingly, a traveler's privacy regarding his/her location may remain safeguarded when the derived vectors remain separated among the separate destinations, but under emergency circumstances the derived vectors may be transferred to an authorized party for determination of the traveler's location.</p> |
