Abstract: A computer system for just-in-time authentication displays a user interface comprising a first portion and a second portion. The first portion of the user interface is associated with a first permission attribute, and the second portion of the user interface is associated with a second permission attribute. The first permission attribute is associated with a first user and the second permission attribute is associated with a second user. The computer system receives, from one or more proximity sensors, a proximity of the second user relative to the user interface. The computer system also receives, from an identity-verification sensor, a verification of an identification of the second user. Further, the computer system activates the second portion of the user interface for interaction from the second user.