 So the easiest way to scan these slides and these 35 millimeter negatives is to use your phone and an inexpensive kit that you can buy or you can make. I mean, let's start by buying because that's the simplest. It's called Kodak's Mobile Film Scanner. It's a small box that you actually put together. Here's how it works. You place your phone on the top and then the slides or the negatives go on the inside.