The Virtuos CCD Reader Virtuos HT-855A, RS-232 - Black is a CCD barcode scanner. In other words, it uses small colour-sensitive sensors, which illuminate the barcode at the same time. An advantage of this technology is that it is highly resistant to mechanical failures, while the downside is its relatively short scanning distance. The device can read 1D, 2D and QR codes, i.e. classic standard barcodes (such as EAN), The scanner can read 1D, 2D and QR codes, i.e. not just classic standard barcodes (such as EAN), but also QR codes, with a speed of 60 scans/s scans per second.