Yes, Amazon already thought of that.
There is an audible confirmation that the Echo heard you whenever you say "Alexa."
The audible confirmation is off by default, so not many people even know it's available. To turn it on, start the Alexa app on your phone, then tap the menu button > settings > (the name of your Echo device) > sounds > and turn on the Wake up sound. Now whenever you say "Alexa" you'll hear a short beep to let you know that she's listening.
when people sync 2 echos how does that work when they are in proximity of each other? I have a spot in the house that i am sure i could say Alexa and two echo's could hear me.
I am having the problem of (for lack of a better word) blind spots when i use the wake word. if i say Alexa when i am in the kitchen she might hear me but she may not its hit or miss and i would have to walk in the living room to see if she lights up. I would like to be able to say Alexa in any room and be sure i was heard without having to visually confirm. the remote is not really a good option since it defeats some of the purpose of having a voice command product.