"The best I can figure, which means this is my hypothesis." Senku explained.

"We know the SCAs are attuned to us, and that this is something that would set off my alarm." He closed the container again, to stop that infernal beeping.

"So what it means is that if you needed someone else's SCA in an emergency, given a few minutes it would attune to you and your needs. It still feels weird, but less weird I think. I don't know if that gets better."