Keychain
noun trademark uk/ˈkiː.tʃeɪn/ us/ˈkiː.tʃeɪn/
[ U ] (also iCloud Keychain)钥匙串（苹果公司产品的密码管理系统）
the brand name for a system developed by the Apple company that allows users to store passwords, credit card numbers, and other important information safely on their computer, phone, etc.
Keychain is a type of password management system. “钥匙串”是密码管理系统的一种。
iCloud Keychain stores credit card numbers and expiry dates, passwords and usernames, Wi-Fi networks, Internet accounts, and more. iCloud 钥匙串可以存储信用卡号码和有效期、密码和用户名、Wi-Fi网络、互联网账户等等许多信息。
[ U or S ] (also keychain)（个人的）钥匙串（苹果公司产品的密码管理系统）
the Keychain system used by a particular person
To lock your Keychain, click the lock icon at the upper left-hand corner of the window. 如需锁定钥匙串，请单击窗口左上角的锁定图标。
Either create a new login keychain or update it with your new password. 要么创建一个新的登录钥匙串，要么用新密码更新。
- More examples
- From the Edit menu in the menu bar, choose “Change Password for Keychain login”.
- To use iCloud Keychain, you need iOS 7.0.3 or later on your iPhone, iPad, or iPod touch, and OS X Mavericks 10.9 or later on your Mac.
- To keep other people from accessing the information stored in your keychain, set a password for your computer for when it goes to sleep or starts up.