Amazon is building upon the Alexa voice-recognition technology found in its Echo range of speakers so that the virtual assistant can distinguish between individual users based on the sound of their voices.
According to anonymous sources who spoke to TIME, Amazon's feature would work by matching the person speaking to a pre-recorded voice sample, or "voice print", to verify the speaker's identity.
A primary account holder would be able to require a specific voice print to access certain commands. A user would, for example, be able to set it so that a parent's voice would be required to make a credit card purchase or turn on the coffee machine through the Echo.
Amazon has been developing the feature, internally called Voice ID, since at least the summer of 2015, according to people familiar with the company's Alexa strategy. The underlying technology is said to have been completed and just needs integrating into Echo speakers, however it's still unclear when that will happen.
The Voice ID technology would be a first in the smart speaker space and make Echo units easier to share between multiple people under one roof. Currently, Echo users can set up multiple profiles and jump between them, but the user must say "switch accounts" or use the Alexa app to do so. And as for credit card purchases, a four-digit authentication code must be said out loud to confirm them.
It's unknown at this point whether Voice ID will extend to the many Alexa-enabled third-party devices now available, or if it would be limited to Amazon's Echo speakers. An Amazon spokesperson declined to comment on the matter.
Alexa recently became capable of responding to 10,000 skills, according to Amazon. Skills are essentially third-party apps that you can interact with via voice, once they've been enabled. The 10,000th skill was Beat the Intro, a music game that tests users' knowledge and love of music.
AI assistants have become increasingly popular over the past few years, while Apple's Siri has remained largely unchanged over the past few iOS updates. Last May it was rumored that the company would launch an Echo-like speaker with Siri integration, enabling users to play music, get news headlines, and more, without needing to interact with their iPhone, but further details have been scant.