I have an idea for a new device. It's a small unit, about the size of a silver dollar, that installs magnetically to anything with a metallic interior, and is used to cook food.
It's heat resistant to levels above the standard. It's got a 3D camera that constantly scans the food, using AI to identify each item, and determine the internal temperature.
This data is then streamed through the walls of the oven to the tablet, or phone, sitting up on your counter. An app is running that shows the 3D contents of the oven, with pop-up floating buttons that show the exact internal temperature, and minutes until done.
Simple, the unit lives inside the oven and is turned on and off from the app. I call it the Hamilton at the Beach Food Analyzer.