It needs a secure-element which supports SWP. The NFC chip it uses doesn't have that...
However there may be a way to add a secure-element by using a sticker or SIM w/that embedded. (they do exist or are planned apparently)
No idea if it's technically feasible to add support this way, but those two routes are our last hope AFAIK.
Maybe it's possible to add support via use of a USB dongle eventually too (once/if we have host-mode).