Some smart coffee machines are Wi-Fi enabled so you can control it via their respective mobile app. If the machine can be connected to a smart device like Google Assistant or Amazon Alexa, there might be a need for a Wi-Fi connection, so you can control the coffee machine via the virtual assistant AI. There are also ones that are Bluetooth enabled which may not require a Wi-Fi connection, but you will need to download the mobile app that is compatible with the machine.