function tick() {
            if (videoElement.readyState === videoElement.HAVE_ENOUGH_DATA) {
                canvasElement.hidden = false;
                canvasElement.height = videoElement.videoHeight;
                canvasElement.width = videoElement.videoWidth;

                canvas.drawImage(videoElement, 0, 0, canvasElement.width, canvasElement.height);

                var imageData = canvas.getImageData(0, 0, canvasElement.width, canvasElement.height);
                var code = jsQR(imageData.data, canvasElement.width, canvasElement.height, {
                    inversionAttempts: "dontInvert"
                });
                if (code && !scanned) {
                    scanned = true;
                    console.log(code);
                    drawLine(code.location.topLeftCorner, code.location.topRightCorner, "#FF3B58");
                    drawLine(code.location.topRightCorner, code.location.bottomRightCorner, "#FF3B58");
                    drawLine(code.location.bottomRightCorner, code.location.bottomLeftCorner, "#FF3B58");
                    drawLine(code.location.bottomLeftCorner, code.location.topLeftCorner, "#FF3B58");
                    // console.log(code);
                    // search for a macaddress
                    var content = code.data;
                    var params = content.split('/');
                    var macaddr = false, key = false;

                    for (var k in params) {
                        if (MACRegex.test(params[k])) {
                            macaddr = params[k];
                            console.log(macaddr)
                        }
                        if (KEYRegex.test(params[k])) {
                            key = params[k];
                            console.log(key)
                        }
                    }

                    if (macaddr && key) {
                        // Hide the camera
                        console.log("initDiGIdotScanner - 7");
                        canvasElement.hidden = true;
                        console.log("initDiGIdotScanner - 8");

                        var alreadyScanned = false;
                        $('.macaddress').each(function () {
                            console.log($(this).text(), macaddr);
                            if ($(this).text() == macaddr) {
                                alreadyScanned = true;
                            }
                        });
                        if (!alreadyScanned) {
                            videoElement.pause();
                            canvasElement.hidden = true;
                            $('#registered-devices').before('<div class="scan-loader"><i class="c4-loader"></i><br>Getting information of device: ' + macaddr + '  </div>');
                            lookupMyDevice(macaddr, key, function (resultLookup) {
                                //console.log('lookup finised')
                                console.log("initDiGIdotScanner - 9");
                                if (resultLookup.have_products) {
                                    // if auto register is checked
                                    console.log("initDiGIdotScanner - 10");
                                    scannedProduct = resultLookup;

                                    if ($('[data-id="autoRegisterScanResults"]').is(':checked')) {
                                        console.log("initDiGIdotScanner - 11");
                                        saveNewDevice(resultLookup.products, function (result) {
                                            console.log("initDiGIdotScanner - 12");
                                            if (result['result'] == "OK") {
                                                addNewRegisterProduct(result);
                                                console.log("initDiGIdotScanner - 13");
                                                digidotScannerStart(); //restart the camera for a new scan
                                            }
                                            else {
                                                $('.scan-loader').remove();
                                                $('.no-device-registerd').remove();
                                                digidotScannerStart(); //restart the camera for a new scan
                                                alert("Failed to save to my devices..");
                                                console.log("initDiGIdotScanner - 14");
                                            }
                                        });
                                    } else {
                                        console.log("initDiGIdotScanner - 15");
                                        resultLookup['macaddr'] = macaddr;
                                        $('.scan-loader').remove();
                                        $('.no-device-registerd').remove();
                                        digidot_devicelist_results(resultLookup); // Show result and the registration button
                                    }
                                }
                            });
                        } else {
                            alert("This product is already scanned");
                            stopCamera();
                            scannerInit = false;
                            digidotScannerStart();//restart the camera for a new scan
                        }
                    } else {
                        console.log("initDiGIdotScanner - 5");
                        if (!macaddr) {
                            $('.search-device-container').before('<span class="error">No valid mac address found</div>');
                        }
                        if (!key) {
                            $('.search-device-container').before('<span class="error">No valid key found</div>');
                        }
                    }
                }
            }
            requestAnimationFrame(tick);
        }