Okay you guys, this is way beyond cool so I just gotta share.
I’ve been in contact with the manufacturer of the Halo scanner to figure out the EM functionality. They say they’re gonna retest it because it may have changed for a variety of technical reasons that I won’t go into details here. So that’s one bit of cool.
But get this: since I was at it, I asked them if they wouldn’t mind sharing their API to turn the Halo reader into a PC reader. You never know… The worse thing that can happen when you ask is they say no.
Well, not only are they perfectly happy to give me the right USB commands, they’re even going to release a new version of the firmware that will send the temperature readings alongside the chip’s UID over USB.
Just like that. Just for us 
This is a great company! Yeah iD Porte!
So, expect to see some software to exploit the Halo reader with a PC from yours truly very soon!