Tech companies know this as well. One of the biggest proponents of the Internet of Things, Cisco Systems, had this to say said in a blog post a few months back:
Clearly, there are many questions that still need to be answered — such as how a company provides for notice and consent in a device that doesn’t have a direct user interface. But in general, it appears that the architecture for protecting IoT consumer data will follow the format of current regulatory regimes for data privacy and security overall.
At the end of the post, the blog’s author recommended FTC regulation will likely keep companies in line with consumer privacy concerns.