Redundant GPS and sat phones. I-phone to keep his sponsers and followers updated (promo/ $$). If it was me - I would have duplicate paper maps and at least three standard compasses of various types.
I wonder if there is a place where you can store the stuff at -10 degrees for awhile to test it on your own that it will still work?
By the way, if -15 is balmy, how does global warming melt the ice and snow down there? (Well - bad example, as in Antarctica the levels are actually increasing.)
I don’t know about the Brit, but O’Brady traversed Greenland fairly recently so that was probably a good test of his gear. And he’s been to Antarctica multiple times already.
This is pretty fascinating. I started following him on Twitter, but now he hasn’t posted in 2 days. He was even answering questions from school kids.