1. A method for detecting shoplifting, the method comprising: receiving, by a computer system, a video feed from one or more cameras viewing one or more locations within a store; detecting, by the computer system from the video feed, first biometric data comprising a baseline measurement of one or more biological functions of an individual while the individual occupies a first position with respect to a point-of-sale (POS) region within the store; detecting, by the computer system from the video feed, second biometric data comprising a subsequent measurement of the one or more biological functions of the individual while the individual occupies a second position with respect to the point-of-sale (POS) region, the second position being spaced from the first position; comparing, by the computer system, baseline measurement and the subsequent measurement to identify a change in the one or more biological functions; and generating, by the computer system, a risk assessment in accordance with the change.