Facial recognition at the front desk: how it works and what changes day to day

What happens in front of the terminal

A face recognition terminal is a device mounted next to the door, with a camera, a screen and, depending on the model, a card reader, a fingerprint reader, a keypad for a PIN and a QR code reader. When someone walks up, the camera finds their face and compares it with the faces enrolled in the device's own memory. If it recognizes the person and they're allowed through that door, it releases the lock.

This detail matters a lot: the matching happens on the terminal, not on some distant server. That's why the door opens quickly and doesn't depend on the condominium's internet connection. The management system has a different job: making sure each terminal's list is correct, spelling out who can come in, through which doors and until when.

What changes for residents

For residents, the most visible change is that there's nothing to carry. There's no key to copy, no fob to lose and no PIN to lend a neighbor. A face can't be handed to someone else, and that solves an old problem in condominiums: access that gets out of control because someone made a copy and gave it to a person who shouldn't have it.

There are also a few things to watch for, and it's worth being upfront about them from day one:

• A good photo makes a difference. A face shot straight on, in good light and without sunglasses, prevents rejections in everyday use.
• Some people have trouble with it or would rather not use their face. Many terminals also accept a card, a fingerprint or a PIN, and it pays to keep an alternative for those cases.
• Children grow and appearances change. Updating the photo every so often is part of the routine, not a sign that the system has failed.

What changes for the front desk and the building manager

At the front desk, the staff are no longer the only barrier between the street and the building. They're still important for receiving deliveries, helping visitors and handling exceptions, but they no longer need to recognize every resident from memory, or open the door for someone who left their key at home.

For the building manager, the gain is control. Who has access stops being a list scattered across notebooks, spreadsheets and the memory of whoever has worked in the building the longest. It becomes a set of records with expiration dates, stating who can come in and through which doors, and leaving a history of every entry for when a question comes up.

Privacy: the question that will come up at the owners' meeting

Someone will ask where the photos are kept, and it's a fair question. Under the LGPD (Brazil's General Data Protection Law), biometric data used to identify a person is sensitive personal data, which calls for more care than an ordinary record.

Before signing a contract, find out where the records are stored, whether the photos are encrypted, who can see the data, whether there's a log of who changed what, and what happens to all of it when a resident moves out. Having those answers ready keeps the topic from stalling the decision.

The real challenge: keeping the terminals up to date

Recognizing a face is the easy part. The real work is keeping each terminal's records accurate month after month. A condominium with three doors has three devices, each with its own memory. When a resident moves out, they have to be removed from all three. When a contractor starts, they need to be added to the right terminals only.

Done by hand, terminal by terminal, this work piles up mistakes: the former resident who can still open the garage, the staff member enrolled on one device and forgotten on another, the photo updated at one door and not at the other. None of these mistakes shows up until the day it causes a problem.

That's why the most important question when choosing a system isn't whether the terminal recognizes faces well. It's how the system makes sure the right information has reached every device, and how it lets you know when it hasn't.

How Abriu handles it

With Abriu, each person is enrolled once, in the dashboard, and the Abriu hub installed in the condominium sends them to the terminal on every door they are allowed to use. The photo can come from a file or be taken on the spot with a phone camera, and the dashboard resizes the image before sending it. Every transfer is verified: the dashboard shows, terminal by terminal, whether the person is already there, and when a device is switched off, the hub tries again as soon as it comes back on.

The dashboard only offers what that person's terminals support, whether that's face, card, fingerprint or PIN, and anyone who is deactivated is removed from every terminal. The terminals are made by Hikvision, and recognition keeps working on them even when the condominium's internet goes down.