Taking the power of HomeCageScan to the masses, the RackScan system allows for the analysis of home cage behaviors in cages housed in a rack system. Ideal for large studies, the RackScan system measures an animal’s most basic behavioral response in the most natural setting for a laboratory animal, unconstrained and non invasive, making the home cage the most ideal testing arena for phenotypic changes due to treatment effects or gene insertion/extraction. RackScan was developed to give researchers the capability to observer numerous animal’s home cage behaviors around the clock, without inducing additional confounds.