To protect Amazon echo from unknown activation using voice command you need to change Word for activation if you don’t do this then anyone can activate the echo and execute voice commands via the known activation call “Alexa”.
You can use Alternative activation password for this and you can change your default password with new password using below command, but you cannot add any custom password or command instead you can use below four commands and that is Alexa, Echo, Amazon and Computer
To change this go to
App menu, select “Settings” and then select your device
Scroll down to “Activation Word”
A drop-down menu appears – Select one of the activation words listed above.
Save the setting with “Save”. The light ring on your device flashes orange.