Authentication is the act, process, or result of proving that something is true, real, or genuinely from the person it claims to be from. If authenticate is the verb, authentication is the noun: the checking itself.

Authentication is the act, process, or result of proving that something is true, real, or genuinely from the person it claims to be fromauthentication是指證明某樣東西為真、為實，或確實來自它所聲稱的那個人的行為、過程或結果 If authenticate is the verb如果authenticate是動詞， authentication is the noun: the checking itselfauthentication就是名詞：指這個檢查的動作本身

In everyday life that can mean proving a painting is not a copy, or proving a document was really signed by that person.

In everyday life that can mean proving a painting is not a copy在日常生活裡，這可能是指證明一幅畫不是仿冒品， or proving a document was really signed by that person或證明一份文件確實是那個人親筆簽的

In computers — and this is where students will meet the word most — authentication is the step where a system checks that you are you, before it lets you in: password, fingerprint, face, or a second code on your phone (two-factor authentication). It names the process, not the permission that may come after.

In computers在電腦領域—— and this is where students will meet the word most這也是學生最常遇到這個字的地方—— authentication is the step where a system checks that you are you, before it lets you inauthentication是指系統在放你進去之前，先確認你就是你本人的那個步驟： password, fingerprint, face, or a second code on your phone (two-factor authentication)密碼、指紋、臉部辨識，或手機上的第二組驗證碼（two-factor authentication，兩步驟驗證） It names the process它指的是這個過程， not the permission that may come after不是之後可能取得的權限