> For the complete documentation index, see [llms.txt](https://userguide.hku.hk/hku-facial-identity-registration/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://userguide.hku.hk/hku-facial-identity-registration/4.-special-cases.md).

# 4. Special Cases

## **Ineligible Accounts:**

Access to Facial Identity registration is restricted to authorized user groups. If your account is not currently eligible (as verified via the central database), the system will not allow you to proceed with registration. Upon tapping the Facial Identity icon in the HKU App or accessing the direct link, an "Unsupported" message will be displayed.

<figure><img src="/files/a3jXyvNUKGMJlffbzpVn" alt=""><figcaption><p>This unsupported message is displayed if your account is not currently authorized for Facial Identity Registration System.</p></figcaption></figure>

## **Staff Access:**

Currently, the online registration via HKU App is exclusive to students. For Staff members, facial identity registration is available only through on-site workstations. This is because the mobile app requires a pre-existing photo reference which is currently only integrated for student accounts.

## **Lack of Student photo:**

Online registration requires a pre-existing official photo in the university database. If your record lacks a photo, mobile registration will be blocked. In this case, please proceed to a physical workstation to complete your registration in person.

<figure><img src="/files/rfRk2T1JW11AC1RhcS2A" alt="" width="375"><figcaption><p>Photo generated by AI</p></figcaption></figure>

An error message appears at the top of the screen if the system cannot retrieve an official reference image from the database.