Amazon has disabled two key privacy features in its Alexa smart speakers, in a push to introduce artificial intelligence-powered "agentic capabilities" and turn a profit from the popular devices. Starting from March 28, Alexa devices now send all audio recordings to the cloud for processing, and choosing not to save these recordings will disable personalisation features. A voice assistant works by constantly listening for a "wake word", such as "Alexa". Once woken, it records the command that is spoken and matches it to an action, such as playing a music track. Matching a spoken command to an action requires what computer scientists call natural language understanding, which can take a lot of computer power. Matching commands to actions can be done locally (on the device itself), or sound recordings can be uploaded to the cloud for processing.

But if you have an Amazon Echo, there's bad news for you - as Amazon is about to controversially kill a popular privacy feature. Until now, some Amazon Echo devices have had the option to process commands locally'on-device', keeping your voice within the confines of your home. But from March 28, all Alexa-powered Echo smart speakers will send your voice recordings to the cloud, whether you like it or not. Cory Doctorow, a blogger and expert on digital rights management, called it'absolutely unforgivable' because it will let Amazon workers snoop on all Echo recordings. Amazon has already received criticism for storing conversations users have with Alexa, which have been listened to and transcribed by staff, it admitted in 2019.

Once you have an Alexa-enabled device like an Amazon Echo, open the Alexa app on your smartphone or tablet and go to Settings Alexa Privacy Manage your Alexa Data Choose how long to save recordings. Select "Don't save recordings" and hit confirm. Delete past recordings in the Alexa Privacy section, including your voice history and history of detected sounds.