Yes. As long as your Barcode Edition Bluetooth module with its plug fits on the DSLR you can switch the camera as often as you want. There is no special starting routine necessary. You can unplug it, change camera or just leave it on the camera. Your Barcode Edition will just start working as soon as you turn on the DSLR. To see which cameras your Unleashed is compatible with, please have a look at our compatibility list.