Nest thermostat

You may soon see ads on all manner of home appliances, as Google has stated in a letter to the Securities and Exchange Commission that it intends to serve ads on "refrigerators, car dashboards, thermostats, glasses, and watches, to name just a few possibilities."

Google's response was in relation to a disclosure request by the SEC regarding the number of paid clicks across the mobile platform, to which the search giant mentioned that it "is increasingly challenging to define what exactly a "mobile" platform is from period to period — and what it will be going forward."

Google also said that while the initial meaning of what can be considered a mobile platform extended to smartphones and tablets, the rise of wearables and other "smart" devices have altered that definition, and that the mobile platform will "continue to evolve" as more devices roll out.

Google is branching out into the world of wearables with Google Glass, which recently became available for anyone in the US, as well as the upcoming Android Wear platform.

While Google hasn't outlined how it intends to serve ads on connected devices, it is possible that the search giant would leverage user data from Nest's thermostat. Nest announced after its $3.2 billion acquisition that it will not share usage data with Google, although its privacy policy ambiguously states that customer information will be limited to "providing and improving Nest's products and services."

Source: Securities and Exchanges Commission