介紹: https://www.google.com/inputtools/
下載: https://chrome.google.com/webstore/detail/google-input-tools/mclkkofklkfljcocdinagocijmpgbhab
手寫功能介紹:https://www.google.com/intl/zh-TW/inputtools/services/features/handwriting.html
其它手寫功能：https://play.google.com/store/search?q=%E6%89%8B%E5%AF%AB%E8%BC%B8%E5%85%A5%E6%B3%95&c=apps&hl=zh_TW
