Amazon Develops Alexa “Voice-Sniffing” Algorithms To Perfect Personalisation

Source: ABC News, Tuesday, Apr 10, 2018

Amazon filed a patent in 2017 that can potentially enable Alexa devices to pre-empt user voice commands by listening for keywords when in inactive mode. The patent is described as a "voice sniffer algorithm". This is advanced artificial intelligence that would allow an Amazon device to listen to a conversation and analyse it for certain words that are said.