After storing a target within Kamui's dimension, the user can then eject it from their eye at any time. This can be done with varying degrees of force, allowing the user to eject weapons at a moment's notice, giving opponents little opportunity to react accordingly. Despite not always being present, Obito could keep targets under genjutsu while they were confined inside Kamui's dimension, thus keeping them incapacitated for extended durations.
Kamui can synchronise with another space–time ninjutsu, granting the user access to the synchronised technique's dimension, as well as any other connected dimensions. Once the dimension has been marked, the user can freely travel between it and Kamui's own dimension.