1. A system for authenticating through a touch-screen interface, comprising: a screen configured to be biometrically engaged by a user; one or more sensors configured to detect biometric engagements on the screen; and one or more hardware processors configured to: prompt the user to perform a movement challenge on the screen using a hand of the user, the challenge being based on a biometric model, the biometric model being unique to an authorized user and comprising information pertaining to movement capabilities of one or more parts of a hand; receive, from the one or more sensors, data corresponding to one or more engagements with the screen from the hand of the user; and grant access to an account of the authorized user in response to a determination that the data received from the one or more sensors is congruent with the biometric model within a predetermined degree of accuracy.