If you need the more rugged scannable notebook, get some backup supplies. These notebooks usually require that you use erasable pens, much like a whiteboard, so that you can just wipe them off and reuse the page. That said, you do need to have that specific pen handy for it to work, and if you lose your pen, you’re out of luck. Similarly, remember that in order to preserve your notes, you need to scan them with your phone, so if you know you’ll be away from an outlet for a few weeks, either bring a power bank or be ready to scan when you get back. With this option, you can also record audio to sync to your notes.