https://blog.wongcw.com/2020/06/02/your-phone%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e6%9b%b4%e6%96%b0%e9%a0%90%e5%91%8a%ef%bc%9a%e6%94%af%e6%8c%81%e7%95%ab%e4%b8%ad%e7%95%ab%e8%88%87ocr%e5%8a%9f%e8%83%bd/