Microsoft contractors have listened to voice recordings made by owners of its Xbox One console, according to Motherboard.
Earlier this month Apple took the decision to suspend a Siri program that allows workers to listen to audio recordings for quality control purposes.
Google and Amazon have both taken measures to make their policies on human reviews of voice assistant audio clearer.
Amazon has now added a toggle that will allow Alexa users to opt-out of potentially having their voice recordings and/or recorded message transcripts reviewed by human workers.
The company suspended the practice across the EU on July 10 after a report published by Belgian broadcaster VRT NWS revealed how Google employees listen to audio recordings by the company’s Google Home smart speakers and the Google Assistant app.
According to VRT NEWS, gained access to more than a thousand audio excerpts recorded by Google Assistant in Belgium and the Netherlands.