Amazon Alexa devices listen for wake words rather than recording all conversations
Amazon states its smart speakers and other hardware only process audio when they detect a specific sound pattern to trigger the wake word.
Global device sales numbers rise
More than 600 million Alexa-enabled devices have been purchased worldwide since the service launched. This large number of units creates privacy questions for many households. The count includes hardware that is not currently active users.
Microphone technology works selectively
Amazon explains that the system does not record every word spoken in a room. Instead, the hardware searches for acoustic patterns matching the designated wake phrase. This method functions similarly to hearing a name while wearing earplugs.
New products expand the ecosystem
The company recently announced new tablets and other items that include Alexa features. These additions will increase the total number of listening devices in homes. Integration continues with the rollout of additional real-world applications for the service.
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