God, I'm bad at this ._.
Wew, Generic sealing is just for sealing weapons and corpses, not living beings or injured people o-o. As for your second question, any foreign chakra will trigger it, so it has to be placed well. And yeah, that tech is crap.
Ho/Mizu//Kaze/Tsuchi/Rai Houin)- Fire/Water/Wind/Earth/Lightning Sealing Method looks so effin' dope! @_@ And coupled with the new rules LoK posted this technique can seal any B ranked elemental technique, no matter how boosted it is. That is priceless. However, not many people use B ranked techs these days unless its a supp for a stronger move so I can't actually put this in the freezer for my future fights. That being said, its contextual I guess.
Now this. THIS. This is why I wanted Fuuin soooo bad. Like, you can't even imagine, L. I can be Archer from Fate/Stay Night now. Basically you seal weapons before hand into seals on your body to be summoned at later times through basic unsealing/summoning rites. The best thing is that it doesn't require any prep prior and can literally pop out of nowhere in the middle of a fight. I like that. Sad that I can't seal my CW, the IXA though :/
Okay so just like Dome Method Formation this barrier can sense all that moves within. To me, that's sorta more effective than sensing lone chakra. Why? Because what if I'm fighting a sensor who suppresses his chakra? Or, what if the user only throws a mundane weapon like a kunai while I'm blindsided? Chakra sensory means nothing in these scenarios. But at the same time I understand that these scenarios are very rare and I most likely won't come across such a situation for a very long time.
BUT! Being the literature enthusiast I am, I have found a clause (I think?): "the barrier focuses on movement and displacement of matter, not solely on chakra detection."
Does this mean that it senses both chakra and movement?