I'm not a developer nor very smart in the field of computer physics, so my suggestion here may be total jargon, but could perhaps provide some food for thought. Anyway, after the revealing Rayman Legends video and the demonstration of figurines using the Near Field Communication features of Wii U, I came to think of what other uses this technology could have in relation to Wii U's hardware. I have previously written about the Nintendo 64 Expansion Pak and how I would enjoy if something like that was made available for Wii U (for Nintendo to utilize if the other next generation consoles from Microsoft and Sony respectively pack much more RAM etc.). This idea was met with healthy skepticism, and due to the form of modern motherboards and such this is probably not something that would work well. But, there might be another solution.
While searching for the rather stupid term "wireless RAM", I came across the Wireless F-RAM memory by Ramtron. Now, this is non-volatile memory and thus not the usual random access memory we talk about for Wii U. However, it apparently performs reads and writes like a RAM, so a slightly different volatile version could perhaps be developed. Its specs aren't that impressive, if we talk using it for Wii U anyway, with only 16-Kilobit of memory. So, to gain approximately 2 Gigabyte using these, it would require at least one million units (if my math is correct). Using these natively is therefore probably not a good idea. What I'm wondering is if you could perhaps use NFC to add more RAM (for example DDR3) to Wii U. This F-RAM uses RFID which is similar to NFC.
Wireless memory evidently exists in some fashion, so what to discuss here is whether a sufficient amount of RAM (or other type of volatile memory) can be added wirelessly, via NFC, to Wii U or if it would be too costly. Is such a thing even possible?
Source:
http://www.ramtron.com/products/wireless-memory-rfid/gen2-uhf-ics-product.aspx?id=124