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Applying for a US visa involves meeting several steps, but one that generates the most questions is the submission of biometric data. Many people wonder if it is truly mandatory, what information US authorities collect, and what the purpose of this procedure is. The answer is yes: as part of the process, most applicants must provide biometric data during an appointment at the Applicant Service Center (CAS).
Biometric data are unique physical characteristics that allow a person to be identified securely. In the US visa process, authorities use this information to verify the applicant's identity and strengthen immigration security controls. Although the term may sound complicated, the procedure is simple, fast, and part of the standard requirements for obtaining a visa.
¿Qué datos biométricos piden para la visa americana?
During your appointment at the CAS, two main types of biometric data are collected:
Digital photograph: This image will be used to identify you, and if your visa is approved, it will appear printed on the document.
Fingerprints: These are captured using an electronic scanner, with no need for ink. They allow your identity to be confirmed and relevant checks to be performed within security systems.
In addition to capturing biometric data, CAS staff review the information provided in the DS-160 form and verify that your documents are complete and in order.
¿Qué es el CAS y cuál es su función?
The acronym CAS stands for Visa Applicant Service Center, a facility that is part of the US visa application process. Its main goal is to collect applicants' biometric data and validate the required documentation before the consular interview.
It is important to note that CAS locations are usually found near US consulates or embassies, but not inside them. Therefore, it is essential to carefully check the address for your appointment to avoid setbacks.
¿Cómo es la cita para la toma de datos biométricos?
On the day of the appointment, it is recommended to arrive at least 15 minutes before the scheduled time. Once inside the facility, you must present your valid passport, the DS-160 form confirmation, and your appointment confirmation page.
Afterward, the staff will direct you to the corresponding window for registration. There, they will take your digital photograph and fingerprints. This procedure usually lasts only a few minutes and, unlike the consulate appointment, it does not include an interview or questions about your trip.
If there is any error or inconsistency in your documents, you could be sent to a special window to fix the issue before proceeding with the process.
¿Qué documentos debes llevar?
To attend the CAS, it is necessary to present:
- Pasaporte mexicano vigente.
- Página de confirmación del formulario DS-160.
- Hoja impresa de confirmación de la cita.
Without these documents, the process could be delayed or even require a new appointment to be scheduled.
Objetos que no debes llevar al CAS
For security reasons, there are restrictions on entering with certain items, including:
- Dispositivos USB.
- Encendedores.
- Objetos que puedan considerarse armas.
- Teléfonos celulares, que generalmente deben permanecer apagados.
Upon entry, an officer will check your belongings to verify that you are complying with access rules.
Cambios importantes en el proceso
Recently, the US Consulate in Monterrey reported that it is no longer possible to schedule the CAS appointment and the consular interview for the same day. Now, applicants must go to the CAS at least 48 hours before appearing for the interview at the consulate or embassy.
Those who had both appointments scheduled for the same date will receive a notification with a new schedule to complete the biometric data capture first.
¿Qué sucede después de entregar los datos biométricos?
Once the visit to the CAS is complete, the next step will be to attend the consular interview, where an officer will evaluate your visa application. If the visa is approved, you will be able to receive it via courier service or pick it up directly at the CAS, depending on the chosen method.
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