Tenprint Fingerprint Certification Tenprint Fingerprint Quality Standards & Control 2

Question 1

What is the standard image size for a single finger in a rolled tenprint capture according to EBTS?

Accepted Answer

1.6 inch × 1.5 inch

Answer

EBTS specifies that each rolled finger impression should be captured at approximately 1.6 inches wide by 1.5 inches tall.

Question 2

What compression algorithm is approved by the FBI for lossy compression of tenprint fingerprint images?

Accepted Answer

WSQ (Wavelet Scalar Quantization)

Answer

WSQ (Wavelet Scalar Quantization) is the FBI-approved lossy compression standard specifically designed for fingerprint images.

Question 3

What is the purpose of slap impressions (four-finger simultaneous) on a tenprint card?

Accepted Answer

They serve as a verification check against the rolled impressions

Answer

Slap impressions verify the sequence and identity of the rolled impressions, ensuring no fingers were switched during rolling.

Question 4

Which factor most commonly causes a 'creased' or 'scarred' appearance in fingerprint impressions that can affect quality?

Accepted Answer

Occupational wear or skin conditions such as eczema

Answer

Occupational wear, scars, and skin conditions like eczema or psoriasis can disrupt ridge continuity and degrade impression quality.

Question 5

What action should a tenprint operator take when a subject's fingers are too dry or flaky to produce quality impressions?

Accepted Answer

Apply a small amount of moisturizing lotion and reroll

Answer

Applying a small amount of lotion or breathing on the fingertips to add moisture can improve ridge definition for dry or flaky skin.

Tenprint Fingerprint Certification Practice Test