Well I say it is not a joke but I found this on a Spanish website and had to rely upon google translation……. my Spanish goes little further than asking for a beer and then thanking the very nice person for providing the same.
There has been an interest in improbably simple cameras for so many years, I started out 40 years ago with something that it only had one button, it got me hooked. You are right, that was the dark ages, fun for a small boy then usually involved mud and or worms or perhaps puppet cartoons such as the excellent Thuderbirds. Think of the post from earlier this week about the World Pin Hole photography day, I asked if that was a joke but no one stood up to be counted in either direction so I assume it was real.

Canon, Sony and company can start to shake. Ikea has decided to create its first digital camera, but yes, cardboard. Now I would like to bring you more but when you copy and paste a google translated page it seems it to revert to the original language here is the link I have for the translation, go see for yourself
Alternatively here is the Spanish, perhaps you can tell us what it means, here is a link to the original page
“Canon, Sony and company can start to shake. Ikea has decided to create its first digital camera, but yes, cardboard. . The chassis or Kämeroschiflen Ikeacam is not like we’re used to, but fortunately this time it’s a product that already assembled, do not pull manual for assembling pieces go.
Includes a small target, a memory and an image sensor. Operates on two AA batteries and is controlled by a button board. No LCD screen, or exposure controls, and filters. You can not ask for more.
Can store a total of 40 images. These are then passed to the computer via USB. Then you have to do is reset the internal memory to capture 40 images.
So far this camera is not so curious for sale. Has been presented on the occasion of the celebration of the International Furniture Fair of Milan.”