Disclosed, among other things, is volumetric security, which may provide improved techniques for identifying a subject by receiving inputs from a 3-dimensional (3D), or volumetric, image, a 2-dimensional (2D) image, an audio feed or recording, a biometric scanning system, a password entry system, a location-based technology system such as Global Positioning System (GPS) or interactions between a Bluetooth® beacon and an application on a mobile device, or another data source, comparing the inputs to data stored in one or more databases, assigning weights to the inputs, outputting weighted values, and integrating an algorithm that factors the weighted values to output a subject identifier and a confidence score. The confidence score may define a probability that the identifier correctly identifies a subject.