問99
頻出度★★★
バイオメトリクス認証の例として, 適切なものはどれか。
令和5年度 ITパスポート試験 問99
This question's explanation and your answers so far.
解説
問 99
Incorrectア
The method of having a person read and enter an image of a character string that machines find hard to interpret is CAPTCHA, a mechanism for distinguishing whether the other party is a human or an automated program. It does not use a person's inherent physical or behavioral characteristics, so it is not biometric authentication.
Incorrectイ
Authenticating with a password string entered from a software keyboard uses information that only the person knows, which is knowledge-based authentication. It is not a physical or behavioral characteristic, so it does not qualify as biometric authentication.
- ウ
正解 Biometric authentication verifies a person's identity by reading physical characteristics inherent to the human body (such as fingerprint, iris, vein, and face) or behavioral characteristics (such as handwriting, pen pressure, and voiceprint). Choice ウ authenticates by reading the handwriting and pen pressure when signing with a touch pen, movements unique to that person (behavioral characteristics), which is exactly an example of behavioral biometric authentication. Therefore ウ is appropriate.
Incorrectエ
Having the person answer a secret question that only they could know is also knowledge-based authentication, verifying identity with known information. It does not read any biological characteristic, so it is not biometric authentication.
ここがポイント
- Biometric authentication is a method that authenticates using biological information inherent to the person, such as physical characteristics (fingerprint, iris, vein, face) or behavioral characteristics (handwriting, pen pressure, voiceprint).
- Authentication factors can be classified into three types: knowledge (password, secret question), possession (card, token), and inherence (biometrics). Identifying which one applies is the key point of this question.
用語