By default, Echo devices use “Alexa” as their wake word. While the device is constantly listening, it only starts tracking and analyzing what you say next after it hears “Alexa.” It then pulls up the relevant results. However, if, say, someone in your house is already named Alexa, you can change the wake word to something else: Amazon, Echo, or Computer.
With Echo, you can talk to almost anyone hands-free—no tapping or searching required. Use Drop In to instantly connect to another compatible Echo at home or send an announcement across Echo devices, like calling the family for dinner or reminding the kids to go to bed. Plus, now with Skype calling stay in touch with friends and family in over 150 countries.
You can create a flash briefing skill if you own, or have the right to distribute, original text or audio content that updates frequently. You should understand web technologies and have the ability to configure HTTPS, RSS and/or JSON content. The voice interactions for a flash briefing skill are defined by Amazon, but you must be able edit the format of your content so that the flash briefing Skill API can understand it.
Both devices work with a variety of smart home lights, thermostats, plugs, and more, but Amazon’s Echo definitely works with a greater range of brands and products. The key difference is that with Apple’s HomePod, the compatible devices need to be HomeKit-enabled, where Echo-compatible smart home products don’t (necessarily). If you’ve already got some connected home products installed, you can check and see which platform it’s compatible with.
Amazon blamed the incident on "human error" and called it an "isolated single case." However, in May 2018 an Alexa device in Portland, Oregon, recorded a family's conversation and sent it to one of their contacts without their knowledge. The company dismissed the incident as an "extremely rare occurrence" and claimed the device "interpreted background conversation" as a sequence of commands to turn on, record, send the recording, and select a specific recipient.