It seems to be very lightweight; already runs on Linux; and it's based upon a new architectural design, and a brand new rendering engine. It shouldn't be too much of a hassle to build, time/dependencies-wise.
I couldn't understand much more of the Kanji-heavy text.
In fact, I managed to obtain a reader compatible with ISO14443-A/B cards (as used by European PayPass/PayWave, and public transport card implementations), and FeliCa (as used by Japanese payment systems) for about GBP35 from a Belgian online store, and a prepaid PayPass card for GBP5, ages ago; and successfully managed to read data from the card under Linux using a modified version of some scripts supplied with LibNFC.
I even discovered that it was possible to open the reader's case, remove the Secure Application Module card, and either insert a GSM SIM card, or hold an EMV card's contacts to the contacts on the device, in order to read data from it.
It seems that was probably one of the earliest cases regarding the legitimacy of API cloning (GH tried to implement a "ThreadX"-compatible API on top of one of their proprietary RTOSes), and eventually lead to Green Hills winning against ExpressLogic (see http://www.zdnet.com/blog/gardner/ruling-expressly-denies-express-logic-its-copyrighted-api-logic/2530).
That said, I also thought of the Sony vs Connectix case - but there, Connectix used reverse-engineered PlayStation BIOS code heavily in their own product, if I remember correctly.