Abstract: Aspects of the technology evaluate a client device query to identify an IP address-based estimated location of a mobile device (602, 604). One or more candidate wireless stations are selected in accordance with the IP-based estimated location and a location-relevant response to the query is also generated in accordance with the IP-based location. This information is transmitted to the mobile device. (606, 608). The mobile device compares the received information about the candidate wireless stations against one or more actual wireless stations with which the mobile device is in communication (506, 508). Log information is generated as a result of the comparison. The log information is anonymized and transmitted to the network without user ID or other client-identifiable information included in the log. (FIG. 1, 510) The received log information is then used to validate the initial estimated location. Aggregation of log information from multiple devices may be used in the validation process.

Abstract: Aspects of the technology evaluate a client device query to identify an IP address-based estimated location of a mobile device (602, 604). One or more candidate wireless stations are selected in accordance with the IP-based estimated location and a location-relevant response to the query is also generated in accordance with the IP-based location. This information is transmitted to the mobile device. (606, 608). The mobile device compares the received information about the candidate wireless stations against one or more actual wireless stations with which the mobile device is in communication (506, 508). Log information is generated as a result of the comparison. The log information is anonymized and transmitted to the network without user ID or other client-identifiable information included in the log. (FIG. 1, 510) The received log information is then used to validate the initial estimated location. Aggregation of log information from multiple devices may be used in the validation process.