private async void Reader_CardAdded(SmartCardReader sender, CardAddedEventArgs args)
        {
            await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): CardAdded event fired.");

            try
            {
                TravelCard card = await CardOperations.ReadTravelCardAsync(args.SmartCard);

                if (card != null)
                {
                    await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Successful read card.");

                    Task updateCardTask = SharedState.SetAsync(SharedState.LastSeenCard, card.RawValues);
                    await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): LastSeenCard updated.");


                    Task updateTimestampTask = SharedState.SetAsync(SharedState.LastSeenTimestamp, DateTimeOffset.UtcNow);
                    await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): LastSeenTimestamp updated.");

                    if (await SharedState.GetAsync <bool>(SharedState.IsApplicationInForeground))
                    {
                        await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Application is in the foreground. Changed Progress value.");

                        _taskInstance.Progress = 2;
                    }
                    else
                    {
                        await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Application is in the background. Post toast notification.");


                        PostToastNotification(card);
                    }
                }
            }
            catch (Exception ex)
            {
                await SharedState.LogAsync($"BackgroundScanner ({_taskInstance.InstanceId}): Failed to read travel card! Exception: {ex}\nStack trace: {ex.StackTrace}");
            }
        }