When fingerprints are required for a new identity document (e.g. an electronic passport), they are taken directly at the corresponding registration authority during the application process. Special fingerprint scanners are used for this purpose.

The applicant must place a finger on the surface of the scanner. The scanner's software then checks the proper positioning of the finger. The fingertip should be as close as possible to the middle of the scanning surface.

A print is automatically collected once the finger is in position. To achieve the highest-quality fingerprint possible, this process is repeated three times. The three prints collected are compared and assessed for quality (in terms of print clarity and number of comparative characteristics). The print that best matches the other two is then stored.

If the quality of all three prints is insufficient, prints are taken from additional fingers. When possible, prints from both index fingers are stored in an identity document. If these fingers are injured or missing (or the quality of the prints is insufficient), thumbprints are collected. If the thumbs are also unavailable, the middle fingers are used, and then the ring fingers. Prints are never collected from little fingers because they are not particularly suitable for comparison.

If only one of a person's fingerprints can be collected, this sole print is stored. If fingerprints cannot be collected due to a temporary injury, the application in question must be postponed or a temporary passport issued. If it is not possible to collect fingerprints due to a permanent condition (missing fingers or extremely worn fingertips, for example), an electronic passport without fingerprints can be issued.

In principle, fingerprints are not collected from children under the age of six.