US Patent 10924880 Geofencing and alerting around objects with verified attributes

The present disclosure includes a method for maintaining a dynamic geofence. The method receives a set of digital IDs and data pairs from a monitored user credential. Each digital ID was received by the monitored user credential as part of a wireless transmission from a node device, and each digital ID includes one or more attributes. The method retrieves a user policy that includes a required attribute and a threshold distance. The method determines whether at least one of the digital IDs includes an attribute matching the required attribute, and verifies any digital id containing the attribute matching the required attribute. The method determines the distance between the monitored user credential and the node device using the data paired with the digital ID, and determines whether the distance between the monitored user credential and the node device is less than the threshold distance.