Do I have to log in?
No. Core logging, the sleepy window, reminders, and the doctor report work without an account. We will not block the Today screen behind a login wall.
When sign-in will appear
When you want a copy that follows you off this phone: encrypted cloud backup, family sync, or restoring Plus after a new install.
Which methods
Email magic link (no password to store). We will not use Facebook login. Sign in with Apple will be added if we offer any other social login on iOS.
Today
This version uses email magic-link accounts for encrypted cloud backup. Optional PIN is a screen lock; a forgotten PIN can restore from cloud after sign-in.
一定要登入嗎？
不必。核心紀錄、困意視窗、提醒與門診報告都不需要帳號。我們不會把「今天」畫面擋在登入牆後面。
何時才會出現登入
當你需要資料離開這支手機時：加密雲端備份、家庭同步，或重裝後還原 Plus。
登入方式
email 一次性連結（不必另記密碼）。我們不會使用 Facebook 登入。若之後在 iOS 提供其他第三方登入，會一併提供 Sign in with Apple。
目前
此版本可用 email 魔法連結登入，把紀錄加密備份到雲端。可選 PIN 只鎖定螢幕；忘記 PIN 可登入後從雲端還原。