https://stampede-entertainment.com/site/ufaqs/when-cast-members-looked-at-their-wrist-seismometers-what-were-they-actually-supposed-to-be-seeing-i-know-all-they-saw-during-filming-was-a-blank-screen/
When cast members looked at their wrist seismometers, what were they actually supposed to be...
supposed to becast memberslooked atwristseismometers