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Work in an office with a load of obnoxious iPhone fanboys?
Stop their phones from working (while not affecting android phones) by flooding the place with helium!
https://www.reddit.com/r/sysadmin/comments/9si6r9/postmortem_mri_disables_every_ios_device_in/
@troubleMoney This conveniently also stops your coworkers from working if you replace enough of the oxygen in the room!