Those are the two LF 1W readers I have. And here’s one of them reading the xEM in my foot through a snow boot:
They problem is, they’re no Proxmark: they’re dumb serial readers that simply output the UID of whatever chip happens to come in the field. My suggestion is to combine that guy and a Proxmark… somehow.
As for HF, I’ve already mentioned the DL533XL above. Here it is lighting up my flexNExT’s LEDs through my wrist like a Christmas tree:
https://www.dailymotion.com/embed/video/x7w68qk
I don’t have a video of it reading it through my wrist, but it worked too. At least as long as my flexNExT was still alive.