Systems and methods securely determine whether a human or a hacking computing device attempts to engage an application. Embodiments of the present disclosure relate to identifying a defined pattern to be displayed by a user interface for an individual to trace. The defined pattern is dynamically displayed so that characteristics associated with the defined pattern change as the defined pattern is displayed. A background is displayed simultaneously with the defined pattern. The background randomly changes as the characteristics associated with the defined pattern change. The likelihood that a hacking computing device can recognize the dynamically changing defined pattern from the dynamically changing background is low while the likelihood that the human brain can do so is high. Thus, user attempting to engage the application is confirmed as a human when a trace of the defined patter is received.