Remember when I was a kid, I once specifically bought a black and white camera to take pictures, just to get that nostalgic feeling. Nowadays, we can just use the Internet to create retro digital photos. We don't need tools like Photoshop, just upload to this website. Open the website, there are two language options - Japanese and English - in the upper right corner, but the Japanese is actually quite easy to understand. Choose the picture you want to upload, then click the dialog box below and it's done. Pretty simple, right? Why not check out what your photos will look like after a few hundred years, hehe.