4 ms·

Normal human users will/should almost always be members of the 'input' group.

• k_sze 7y ago
  Maybe being a member of the input group allows you to spy on other users? Just maybe. I don’t know Linux well enough.
  • Crinus 7y ago
    It does but this is only in an environment where the same computer is accessible by more than one people at the same time with different keyboards and monitors. In practice this is an extremely rare case and in that case (and assuming the people involved cannot just trust each other for some reason) the permissions can be set to only allow access to a single device per user.