Abstract: The invention relates to a computer-implemented method for capturing a 2-D barcode using a portable digital device including a browser and a digital camera. The method comprising accessing, via the browser, a web page configured to enable a user to capture 2-D barcodes, and downloading a software application from the web page. The software application, via the browser, prompts the user to take a photograph of a 2-D barcode, and then launches the digital camera to take a photograph capturing the 2-D barcode. The software application identifies the barcode, or transmits the photograph to a remote server to decode the barcode, and opens a further web page associated with the 2-D barcode in the browser. Of particular note, the barcode may be used to record attendance and time of attendance at the site via the browser. The invention has application to monitoring maintenance works and site attendance by maintenance personnel.