Digital assistants offer convenience, but they also offer continuous surveillance, and it’s not always clear when the tech is listening. Alias by Bjørn Karmann is a device you put on top of the assistant the block any unwanted listening:
Alias acts as a middle-man device that is designed to appropriate any voice activated device. Equipped with speakers and a microphone, Alias is able to communicate and manipulate the home assistant when placed on top of it. The speakers of Alias are used to interrupt the assistance with a constant low noise/sound that feeds directly into the microphone of the assistant. First when Alias recognises the user created wake-word, it stops the noise and quietly activates the assistant with a sound recording of the original wake-word. From here the assistant can be used as normally.
Armed with a Raspberry Pi and a 3-D printer, follow the build guide to make your own.