The International Association for Cryptologic Research (IACR) uses an electronic voting system which needs three members, each with part of an encrypted key, to access the results.

i went through a tour of decommissioned nuclear rocket facility approximately 30 years ago and to docent explained that the launch required 2 people w each having their own key to trigger the launch.

someone asked what would happen if one person refused to turn the key or lost it and the docent replied that they would be shot by the other key holder if they didn’t comply for any reason at all and i lol’ed at the prospect of the iacr having the same policy.