The Cook-key® was designed to link the Thermomix® TM5 to the Cookidoo® portal. Not everyone wished to use this function or had Wi-Fi at home. For these reasons, the Cook-key® was available as a separate accessory for the Thermomix® TM5.
Time passed, technology evolved and Thermomix® kept up the pace. For TM6 the Cook-Key® has been eliminated. The TM6 has an integrated WiFi module that allows easier, more efficient, seamingless communication with the internet.