

This is interesting in a “how far can you launch a pumpkin using an air canon” way, not a “you only need to cool this down to -40C to make it super conduct” way. It’s a fun experiment with nearly zero practical purpose outside of some very niche edge cases. Wearable computing is probably the only realistic one at the moment for a CPU that you can stretch a little and runs incredibly slow.
Today it looks like the answer is technically none of them. The FAQ on bookshop.org claims they’re working with Kobo to add support “later this year”.