Developed by Dr. Corey Nislow (University of Toronto), the Barcoder collection provides an efficient way to introduce unique barcodes in to arrayed yeast libraries. Highly parallel bioassays are a cost effective way to perform genome-scale screens. However, inserting these into a current collection can be expensive and time consuming. This collection allows barcodes to be introduced systematically simply by crossing mate-types. The method has been validated in combination with the DaMP collection (Yan et al., 2008).