Google has registered a device with the US government, as part of a broader initiative to track users across the world, the company announced on Wednesday.
The device is the Amazon Fire, a Google trademark.
Google has been registering devices with the government since 2011.
Google, which is working on its own version of a smartphone called the Google Pixel, also began to gather intelligence on Google services in January.
It was not immediately clear whether Google had been registering the device in order to track the Google accounts of those who visited certain sites.
Google has also been registering products with the federal government, such as the Google Wallet and Google Search accounts, as well as with local law enforcement, the Wall Street Journal reported.
The Amazon Echo, the Amazon Echo Dot and the Amazon Tap, a smart speaker, have also been registered with the Federal Trade Commission, which helps companies negotiate the government’s online advertising rules.