Which of the following biometric authentication means is accurate but expensive?Group of answer choicesFingerprintIrisFaceVoice

To determine which biometric authentication method is accurate but expensive, let's analyze each option provided.

1. Fingerprint: One of the most common biometric authentication methods. While fingerprint scanners are generally affordable and widely used, they are not usually considered expensive.

2. Iris: Iris recognition technology is known for its high accuracy due to the unique patterns of the iris. Additionally, the equipment required for iris scanning tends to be more costly compared to other biometric systems, making it both accurate and expensive.

3. Face: Facial recognition technology has improved in accuracy, but the cost can vary significantly. Budget options are available, and while high-end facial recognition systems can be expensive, they aren't universally categorized as such.

4. Voice: Voice recognition systems can be reasonably affordable but might lack the level of accuracy required for high-security applications. Therefore, they might not be classified as expensive.

Final Answer

Based on this analysis, Iris recognition is the biometric authentication means that is both accurate and expensive.