What are two common methods used to obtain fingerprints?

The correct answer is based on the widely accepted methods used in forensic and identification practices to collect fingerprints. Ink and digital methods represent the two primary approaches currently utilized.

Inking involves the traditional technique where an individual’s fingerprints are rolled onto a fingerprint card coated with ink. This is a historically common practice and is still used in various applications, particularly in environments where physical records are maintained.

On the other hand, digital fingerprinting employs technology to capture fingerprints electronically. This method is increasingly favored due to its efficiency and convenience. Digital devices can create high-quality images of fingerprints without the need for physical inks or papers, and the data can be easily stored and transmitted.

The other choices do not represent standard or effective methods for obtaining fingerprints, making them unsuitable. For instance, using pencil and charcoal would not yield clear, usable fingerprints for identification purposes. Similarly, water and pressure or paper and glue would not produce reliable fingerprints and are not part of any recognized fingerprinting process. Thus, ink and digital methods are the recognized standards in the field of fingerprint collection.