1. A method comprising: receiving a location-verification request from a computing device, wherein the location-verification request includes a plurality of network attributes for each of a plurality of wireless networks, wherein the network attributes include data related to the plurality of wireless networks and a unique identification for respective wireless networks of the plurality of wireless networks; comparing the plurality of network attributes with a reference set of network attributes to determine an intersection ratio, wherein the reference set of network attributes comprises data related to a plurality of reference wireless networks and a unique identification for respective reference wireless networks of the plurality of reference wireless networks, wherein the intersection size is the sum of the number of unique access points in common of (i) the plurality of wireless networks of the location-verification request and (ii) the plurality of reference wireless networks of the reference set of network attributes, the union size is the sum of the number of unique access points in either of (i) the plurality of wireless networks of the location-verification request and (ii) the plurality of reference wireless networks of the reference set of network attributes, and the intersection ratio is the ratio of intersection size to union size; determining a likelihood that a position associated with the reference set of network attributes and a position associated with the location-verification request are the same position based on the intersection ratio; and based on the likelihood indicating the position has changed, enabling an additional location sensor to provide absolute location information.