New Matrix 2D barcoded tubes in barcoded latch racks from Thermo Fisher Scientific, Waltham, Mass, enable advanced sample tracking and identification. By adding unique laser-etched barcodes to three sides of the tube racks, users can easily track racks of tubes without the need for adhesive labels. Use of the barcoded racks can protect against sample misidentification caused by duplicate or incorrect labeling. Tubes and racks can be identified using the handheld Thermo Scientific VisionMate wireless barcode reader, which instantly decodes linear and 2D barcodes to provide secure sample tracking in a flexible and portable format. For more information, visit Thermo Fisher Scientific.