I’m guessing that the way it works is it’s sending the barcode number to the microwave supplier, the supplier sends it to 5738 vendors who have legitimate interest in updating the profile they already have on you, then the heating programme is sent back to you. The same heating programme is described on the package you already hold in your hands. Fingers crossed that your microwave is getting security updates, if not, someone could be downloading all data from your laptop because they got into your network using a microwave. That is the reality of IoT.