South Park famously annoyed the world by triggering Echo and Google Home devices with familiar wake words. When Amazon’s at the wheel, however, the company is able to ensure that Alexa stays quiet, using a method called acoustic fingerprinting.
from Pocket https://techcrunch.com/2019/01/31/heres-why-amazons-super-bowl-ad-wont-trigger-alexa/
via TV Aerials Leeds
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