Sandilyam Automation Systems [Pvt.] Limited supplies Online Verifier with Automatic Variable Aperture. Sandilyam Automation Systems [Pvt.] Limited is the manufacturer of barcode film masters advanced in the development of digital barcodes [Diskmasters] for transmission via modem or on floppy disk. Online Verifier with Automatic Variable Aperture can be integrated in to thermal transfer or ink jet label printers. This Verifier is able to operate at label substrate speeds of up to 12.5 cm per second and verify and validate symbols at a rate of up to 2 labels per second. Online Verifier with Automatic Variable Aperture validates data of UCC/ EAN-128 and many other industries specific data formats. Printable reports can be produced from the stored data and all the screens that are available on our standard units can also be shown. Variable data codes are checked and any missed codes or duplicated codes are reported. Any failure can either stop the printer or give a warning.