Can a non US Cook-Key® be used on a US TM5? Yes. And with this configuration the user can access a non US Cookidoo® account. Related articles TM5 Mushroom Risotto Is the Cook-Key® available in the US? The Thermomix® TM5 Is the Thermomix® appliance protected from viruses and hacking when using the Cook-key® How do I find over 41,000+ recipes on Cookidoo®?