Final answer:
The use of a vertical format on an ID indicates the horizontal position of the ID and may signal a temporary or provisional status.
Step-by-step explanation:
The use of a vertical format on an ID does not indicate the age of the person, the expiry date of the ID, or the gender of the person. However, it does indicate the horizontal position of the ID.
In some cases, a vertical format on an ID may be used to signal a temporary or provisional status. For example, a driver's license for a learner may be issued in a vertical format until they obtain their full license.
It's important to note that the specific significance of the vertical format can vary depending on the issuing authority and the purpose of the ID.