Most photo labs will offer image scans from your film pictures that they deliver digitally once your photos have been processed. This is the easiest method for getting digital versions of pictures from disposable cameras. Some labs will allow you to pay extra for higher-quality scans, though that's typically not necessary with photos from a disposable since sharpness and detail aren't exactly abundant. You can scan the film yourself, but it's a much longer process than simply sending it away and it can even be dangerous if you're taking apart a disposable with a built-in flash that stores lots of power.