Vehicle access control with RFID and QR: a guide for condos and companies

The real problem: three flows mixed into one gate

Every vehicle access point mixes the same three user types, and a solution that only thinks about "cards" fails two of the three:

• Residents / fixed staff: they pass twice a day, every day. They need fixed, frictionless identity.
• Visitors: they come once or for a few hours. Giving them a physical card is costly and insecure; they need temporary access that expires on its own.
• Vendors and deliveries: they pass sporadically, and you want to block them with one click when they're no longer welcome.

The system's components

How each flow is solved

Flow 1: resident with RFID

The resident gets their card and is enrolled with the card number and access group. From the platform, enrolling and removing take seconds — and the log is automatic:

curl -X POST https://YOUR-API-DOMAIN/customer/YOUR-SERIAL \
  -H "Authorization: Bearer {token}" \
  -H "Content-Type: application/json" \
  -d '{
    "full_name": "Maria Rojas",
    "pin": "1234",
    "card_number": "12345678",
    "access_group_number": 1,
    "privilege": 0
  }'

Flow 2: visitor with a temporary QR

The visitor doesn't get a card: they get a time-limited QR code. It's generated before the visit (by the reception desk, the guard or the resident from their app) and when used, it records who entered, when and with which code. No cards to hand back, no manual logbook.

Flow 3: vendors and the blacklist

Frequent vendors get their own credential; sporadic ones use a temporary QR. The operational advantage lives in the platform: if a vendor is no longer welcome, you suspend their credential and the gate stops opening for them, without going to delete anything on the device.

The log: what turns the gate into a system

Every event — entry, exit, denied attempt — is recorded and queryable. For auditing, deterrence or simply to answer a resident's "who came in Tuesday at 7", the query is one API call:

curl -X GET "https://YOUR-API-DOMAIN/report/YOUR-SERIAL?from=2026-09-01&to=2026-09-14" \
  -H "Authorization: Bearer {token}"

For those building software

If your SaaS manages condos, parking lots or camps, adding vehicle access "out of the box" means firmware, barrier protocols and years of work. With API integration, your software:

• registers and deactivates vehicle credentials from your own system (resident, access group, card);
• receives entry and exit events in real time to notify or trigger rules;
• delivers logs and reports ready for the administrator — without building any hardware layer.

You sell the feature; the device layer is already solved.

Common mistakes when building it

• Buying the barrier before the flow: define first how residents and visitors will be registered; the barrier is the easy part.
• No log: a gate that opens without records is a security debt.
• Eternal cards: credentials with no expiry that outlive the tenants — the classic condo security hole.
• Isolated systems: the gate on one system, the pedestrian lane on another and reception on a paper log: three sources of truth that never match.

Frequently asked questions