What tasks might require group authorization?

Question

User identification

Models-scenarios of group actions are interesting, where a "bundle" is needed - simultaneous authentication of several users. Example - two (three, ten) partners cannot send a payment to the bank without simultaneously activating the key. Or just real models of group activities. For example, they pressed the buttons together and the light turned on. Please do not offer absurd models.

Answer 1

In life, I only encountered this in games: if everyone does not press "ready" at the same time, then after a few seconds the lobby closes and starts to be created again. It helps a lot to get rid of those who do not understand where they are at all.

Answer 2

Weird question. What, you don't watch movies?
There, in an accessible form, different situations are played out: the opening of a safe depository, the launch of nuclear warheads.
And it’s more correct to call this thing not a group authorization, but a secret sharing scheme . Is the ignorant session not over yet?

Answer 3

What I have experienced in my experience:
It is clear that there are still a bunch of similar systems that require authorization of actions with them by several users at once.

Answer 4

even as a model of hard motivation can be used, one did not enter, the rest of the team members did not enter, the work got up.