Enter: Nathan Broadbent, a young software engineer from New Zealand who recently took this matter upon himself. Nathan was inspired by a Reddit post fittingly titled, “Food items should have QR codes that instruct the microwave exactly what to do...”

So, Nathan used a single-board computer called Raspberry Pi to develop a program that interacts with his home microwave, and which can be controlled remotely.
Source: Some Dude Hacks Microwave, Puts Manufacturers to Shame

Microwave are pretty rudimentary devices, by today's standards: insert food, choose time, maybe power or some program if you feel adventurous, and press start... lots of buttons but not for much.

They can be made smarter, and I guess people would pay a little extra for a smart microwave which would automatically cook the food better and with less input and supervision. This is beyond a luxury feature to show off - it really has value. But as usual - I don't want to sound pessimistic but one has to see thing for what they are - the big companies are sitting on their market and waiting for a smaller company to innovate, so that they can steal their idea, learn from their mistakes, then bully them out of the market.
5 days later
This is great, but why add this feature that is not necessary, making the microwaves less affordable for everyone?

The great thing about microwaves is the fact that they heat up good really quickly, and are cheap to get. I like the fact that I can decide what cooking duration I want for my food.

So I really don't see how this is a necessity.