Short answer: No single credential wins everywhere. Facial recognition is the hardest of the three to share and needs nothing to carry, mobile credentials are easy to issue remotely, and key fobs are cheap, familiar fallbacks. Edge.AI by Proptech.AI supports all three, face, QR code and RFID card, on one platform, so each person chooses and the property pays for one system instead of several, the most cost-effective way to cover everyone.
Key takeaways
- Facial recognition is the hardest credential to lend or copy and leaves nothing to lose, but it requires biometric consent and an alternative for anyone who declines.
- Mobile credentials can be issued remotely and suit visitors and contractors, though phones die, get forgotten and must be taken out at the door.
- Key fobs and cards are inexpensive and familiar, yet they are easily shared, lost and, in older formats, copied.
- Speed at peak times depends on whether people have to find something, so hands-free entry helps most at busy turnstiles and amenity doors.
- Supporting all three on one platform, as Edge.AI does, lets each person choose and avoids paying for separate systems.
How do the three credential types compare?
Each one wins on different factors. Among proptech decisions, credential choice is the one every occupant feels every day, so it deserves a side-by-side look.
| Factor | Facial recognition | Mobile credential | Key fob or card |
|---|---|---|---|
| Convenience | Hands-free, nothing to carry | Uses a phone most people carry, but it must come out | A small item to carry and present |
| Sharing | Much harder to lend | A static QR code can be forwarded | Easy to hand to a friend |
| Copying | Spoofing is the threat, so look for multi-sensor checks and alerts | Depends on how the vendor protects the credential | Older proximity cards can be copied with inexpensive tools |
| Lost credential | Nothing to lose | A lost or dead phone blocks entry | Works for whoever finds it until deactivated |
| Peak-time speed | No pause to search for anything | Slowest when a code must be opened at the reader | Quick when already in hand |
| Cost over time | No physical item per person | Phones are user-supplied; licensing varies | Low unit cost, recurring replacements and admin |
| Accessibility | Helps people with full hands or limited dexterity | Requires a smartphone | Requires presenting a card at the reader |
| Privacy | Biometric data, so consent, retention and deletion rules apply | Personal data such as an email or phone number | Little data on the card, though entry logs are still personal data |
Where does facial recognition fit best?
At busy entrances used daily by the same people, and wherever a shared credential costs money: lobby turnstiles at 8:45 a.m., a members’ gym where one passed fob means one unpaid membership, or a residential amenity floor where non-residents are a liability.
Proptech.AI specifies 99.9% accuracy for the multi-sensor Edge.AI device, which also raises alerts on suspicious spoofing and fraud attempts. The FTC has warned that unsubstantiated accuracy claims about biometric technology can be deceptive, so ask every vendor how its figures were measured and whether its algorithm has been tested in NIST’s FRTE 1:1 evaluations. Hardware design matters too: Edge.AI’s split device keeps sensitive connections and data away from the user-facing unit, whereas a single-appliance reader pulled off the wall can expose network links, lock relays and stored data.
When is a mobile credential the better choice?
When people come rarely or briefly, or when access must be issued from a distance. Visitors, contractors, day guests and new arrivals who have not enrolled yet are natural QR code users, because the code reaches their phone before they do.
Mobile credentials range from QR codes to app-based and phone-wallet credentials. Edge.AI’s mobile option is a QR code on the phone with no app download, which keeps visitor onboarding light. The honest trade-offs: a static QR code can be screenshotted and forwarded, so ask any vendor how its codes are protected against reuse, and anyone without a smartphone needs another option.
Do key fobs and cards still have a place?
Yes, as a dependable fallback. Cards work when a phone battery is dead, suit people who decline biometrics and do not carry smartphones, and keep existing readers useful during a phased upgrade.
Their weaknesses are just as familiar: they are easy to lend, easy to lose and, in older proximity formats, easy to copy, and every issue, replacement and deactivation takes admin time. Our analysis of key cards vs. facial recognition and the true cost of access credentials runs those numbers in detail.
Illustrative example: Assume a 400-person property with 250 entry days a year. Placeholder assumptions: a fob costs $6, staff time costs $40 an hour, 20% of fobs are replaced each year at 15 minutes of admin each, and phone-only entry needs desk help on 1 in 200 entries at 3 minutes per assist.
- Fob-only: 80 replacements × ($6 + $10 of admin) = $1,280 a year, before counting shared or copied fobs.
- Phone-only: 400 × 250 = 100,000 entries ÷ 200 = 500 assists × 3 minutes = 25 hours × $40 = $1,000 a year.
- Choice: if, for example, 70% choose face, 20% a QR code and 10% a card, fob replacements drop to 8 ($128) and phone assists to 100 ($200), about $328 a year.
The amounts are modest by design, because the larger cost of credentials is sharing and the staff time spent policing it. Add a line for face-user assists if your pilot shows a need, then compare your totals with a subscription quote from Proptech.AI.
Why does Edge.AI support all three credentials?
Because every property’s population is mixed, and a proptech platform that forces one credential on everyone creates its own costs. Edge.AI facial recognition access control lets people use the method they prefer, a face, a QR code or an RFID card, managed in one platform alongside visitors, staff and contractors.
Choice also makes the privacy model work. Biometric privacy consent is the first step of appless enrollment, so declining simply means picking a QR code or card. PII is kept off the door hardware and separate from the management console, any data can be deleted on request, and analytics run on tokenized, PII-free data. Under Illinois’ BIPA, for instance, biometric data may not be collected until the person has been informed in writing and has signed a written release; our compliance guide covering BIPA, GDPR and CCPA goes further. This is general information, not legal advice.
How do you add face and QR entry to a building that runs on cards?
Keep the card system and build on it. In integrated mode, Edge.AI connects to existing panels via Wiegand, so cards keep working while face and QR entry are added. The other three options are a parallel pilot beside the card system, a hybrid that integrates some doors and runs others standalone, and a full replacement, each available with cloud or on-prem hosting.
330 Madison in New York, a 39-floor tower in JLL’s portfolio, took the integrated route: Edge.AI was layered onto the building’s six turnstiles and existing card-based system, with Appless Self Enrollment and facial recognition added for occupants. Read the 330 Madison case study, or browse AI access control by industry to find the credential mix that suits your property type.
Frequently asked questions
Facial recognition is generally harder to share than a mobile credential, because a face cannot be lent or forwarded the way a phone or a static QR code can. The main threat to facial recognition is spoofing, so buyers should look for multiple sensors and spoofing alerts, as in Edge.AI by Proptech.AI. Mobile credentials remain useful for visitors and contractors, and many properties are best served by a mix.
Edge.AI supports mobile access through a QR code on the person’s phone, with no app download required, and visitors can pre-check-in on their own phones without an app. Alongside the QR code, Edge.AI supports facial recognition and RFID cards, so each person can choose the method they prefer. All three credentials are managed in one platform together with visitors, staff and contractors.
Key fobs and cards are still worth keeping as a fallback after adding facial recognition. Cards work when a phone battery is dead, suit people who decline biometrics and do not carry a smartphone, and keep existing readers useful during a phased upgrade. Edge.AI supports RFID cards and can integrate with existing card-based access control systems via Wiegand.
At peak times, the fastest credential is usually the one people do not have to search for. Hands-free facial recognition avoids the pause while someone finds a card or pulls out a phone, which matters most at busy lobby turnstiles and amenity doors. A fob that is already in hand is also quick, while phone-based entry is slowest when people must open a code at the reader.
A property using Edge.AI by Proptech.AI can let each person choose between facial recognition, a QR code on a phone and an RFID card. Enrollment opens with a biometric privacy consent screen, so anyone who declines simply uses a QR code or card instead. Offering a choice respects privacy expectations and avoids the costs that come with forcing one credential on everyone.
Offer every occupant the credential that suits them
See face, QR code and card entry working side by side on one platform. Use the contact form below this article or email sales@proptech.ai to schedule a demo or request a subscription quote.
Sources: NIST Face Recognition Technology Evaluation (FRTE) 1:1; FTC Policy Statement on Biometric Information; Illinois Biometric Information Privacy Act
