https://blog.wongcw.com/2021/02/23/galaxy-z-fold-3%e8%8b%a5%e6%94%af%e6%8c%81s-pen%e5%8f%af%e8%83%bd%e6%a8%99%e8%aa%8c%e8%91%97galaxy-note%e7%94%a2%e5%93%81%e7%b7%9a%e7%9a%84%e7%b5%90%e6%9d%9f/