| CPC H04L 63/107 (2013.01) [H04L 9/085 (2013.01); H04L 9/3213 (2013.01); H04L 9/3247 (2013.01); H04L 63/0442 (2013.01); H04L 63/0876 (2013.01); H04L 63/20 (2013.01)] | 20 Claims |

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1. A method comprising:
receiving event reports from client devices, wherein each event report comprises a share of a secret indicating a location identifier for a location at which a corresponding client device was detected after presenting a digital component associated with geofence data indicating the location;
determining that at least a threshold number of event reports that include respective shares of a same given secret for a given digital component have been received;
determining the given secret using each share of the given secret; and
updating a location event measurement for the given digital component based on the event reports that include the respective shares of the given secret.
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