That all sounds pretty cool. I could have sworn they mentioned all those devices they were producing were “personal aura” devices thus being a shield, but that could have just been Day not being aware of what they were. Perhaps the technology of a personal aura but used differently can become a teleporting device.

It’s also possible Hari didn’t even need to sneak anything to Demerzel. I think merely mentioning that the prime radiant is right there and that she could understand it was enough for her to be curious. I can’t recall if she actually took it? I suppose they could have snuck it out with her.