US senators have written to Google asking for more details about revelations that a hidden microphone had been built into its Nest devices.
The existence of the microphone was revealed when Google announced that it would be enabling voice-activated features on the home alarm product
The company then apologised for not disclosing the fact earlier, saying it had not been used “up to this point”.
Now, senators are asking chief executive Sundar Pichai to clarify.
“In recent years, consumers have become increasingly concerned about the ability of large technology companies to collect and use personal data about them without their knowledge,” the letter reads.
“Therefore, it is critically important that companies like Google be completely transparent with consumers, and provide full disclosure of all technical specifications of their products at the point of sale.”
It added that Google’s failure to disclose the microphone’s existence “raises serious questions about its commitment to consumer transparency and disclosure”.
Google has said that the microphone was “never intended as a secret” and it was an error that it was not listed on the technical specifications.
But the three senators have asked for more information, including:
details about exactly when and how Google became aware that a microphone was not listed on the technical specifications available to consumers
whether it had always been a component
what Google was doing to inform customers
Google’s process for developing technical specifications
whether Google was aware of its being used by any third party for unauthorised purposes
whether there were any similar omissions in other Google products
The letter was signed by:
Roger Wicker, who chairs the committee on commerce, science and transportation
John Thune, who chairs the subcommittee on technology, innovation and the internet
Jerry Moran, who chairs the subcommittee on manufacturing, trade and consumer protection
The product in question is Nest Guard, one of Google’s Nest Secure range of home security products.
The alarm and motion sensor will now be compatible with Google Assistant.
The senators have asked Google for a written response by 12 March.