> The part that listens for the "Alexa" word is analog not digital. > It cannot be updated remotely by firmware. I used to think that about my phone, that it w

> The part that listens for the "Alexa" word is analog not digital. > It cannot be updated remotely by firmware. I used to think that about my phone, that it was hard-wired to "OK, Google". I had a Moto X (first generation), which is one of the first phones to have this always-listening feature. They claimed that it had special hardware that allowed it to work using very little power. But after a software update, they added a feature that allowed me to retrain the activation phrase to whatever I wanted. They recommend using something with 5 syllables or more. It works. I haven't addressed my phone with "OK, Google" for years. If Motorola (owned by Google at the time) can do it with Moto X, I'm sure Amazon could do it with Alexa too.