that one is using red chopstick, to lock the middle finger...... but how it works or performed, is actually unknown... is it simply just 'lock' will be ok, or is there much more stuff about it?
actually for guaitan, i think they don't use much 'special effect', hence they usually ends up with 'nothing' but at times, their place of 'shooting' even thru youtube (where i'm watching) does give the 'feel' also. but watching tw one, too 'fake'... example chair fly from 1 corner of the room to another.. etc... yet i shouldn't deny that, tw discussion can use as very basic background knowledge.....
if watching tw this talkshow, i might as watch jap's one..... on their accidental recording of 'them'...... although i can say the jap one is all fakes... probably 99.8% are fake....
for at home watching these stuff.... i could say most likely is your imagination to 'feel', unless your house is not 'clean'..... but still don't deny a possibility..... cause its seems watching/hearing these stuff could reduce your resistance and increase your sensitivity... hence if outside, is more prone for attracting them, as they are curious on what you are talking about. but most likely they are the harmless one.... only come ssrr....