Your iPhone will die. Your Android will crash. Somewhere, sometime something will go wrong with the device that does everything for you. And you will still need to get that number, write down those directions, leave a coworker a note. So carry a pen.
This telescopic ball point from True Utility will do quite nicely. Folding down to less than 3 inches but extending out to 5.5, you won’t feel like you’re trying to wrap your hands around a golf pencil. The telescopic tubing is stainless steel, the outer body is anodized aircraft-grade aluminum and a powerful magnet holds the cap in place — no ink getting everywhere and no crushed pen. It comes with 3 refills and a v-clip to go on your key ring. Here’s part of your everyday carry that might get you jotting things down, just for fun. – $13