GAT Shield provides reports by Geographic region based on multiple different search parameters.
An admin can filter Chrome users by device Latitude and Longitude.
You can find all users Chromebooks located in the city and country, you can search for device IPs, OS versions, the Device org. Unit, Device Serial Number, Last synced, Users/Groups and Organization Units.
When the filter is applied, select Apply and the result will be shown on a Map and all the information regarding the user and devices below.