Alexa is a voice-activated virtual assistant that responds to prompts. This is just my idea but I don't know if it will work.. like you could try to program Alexa to finalize commands only when preceded or followed by a designated code word, such as 'Answer me now'. Maybe Alexa subreddit has the answer: [https://www.reddit.com/r/alexa](https://www.reddit.com/r/alexa)