ProxyHam: It’s designed to use a radio connection to add a physical layer of obfuscation to an internet user’s location. It connects to Wi-Fi and relays a user’s Internet connection over a 900 megaherz radio connection to their faraway computer, with a range of between one and 2.5 miles depending on interference from the landscape and buildings. That means even if investigators fully trace the user’s internet connection, they’ll find only the ProxyHam box the person planted in a remote library, cafe, or other public place—and not their actual location.

Source: This Online Anonymity Box Puts You a Mile Away From Your IP Address | WIRED