one time password

基本解释

One solution for that is to use a one-time password (OTP) system.
這種情況的解決方案就是使用一次性密碼（OTP）系統。
The hackers log into the user's bank account, quickly copying the one-time password if one is used.
黑客登錄到用戶的銀行帳戶，快速複制的一次性密碼，如果有使用。
This paper analyzes some defects of the traditional S/KEY One-Time Password(OTP) authorization system, and proposes a new S/KEY authorization solution.
分析傳統S/KEY型一次性口令認証系統的缺陷，提出一種新型的S/KEY認証方案，實現客戶耑與服務器的雙曏認証，可進行會話密鈅協商，且每次認証産生不同的會話密鈅。

Images can also be enjoyed by friends and family by issuing a one-time password to connect several smartphones simultaneously to the cameras.
ENGADGET: Olympus E-PL5 and E-PM2: Micro Four Thirds cameras with OM-D-like focusing, performance boosts (hands-on)
The most obvious one to adopt appears to be the user authentication and OTP (one-time-password) that has been in existence for some time and has seen a fair degree of success in preventing fraud.
FORBES: How much should you trust your mobile phone?