The international "smart building" market has spent the past few years investing in a quiet shift: access control has stopped being just a matter of lock and key, and become a layer of data management about who comes in, when, and through where. In Portugal, most condominiums still use the simplest model — but the mid-tier options are already accessible to condominiums of any size.
The Options, from Simplest to Most Advanced
1. Traditional physical key. Simple, no recurring cost, but no record at all of who came in or out, and expensive (and slow) to replace if a key is lost or a tenant leaves.
2. Physical doorman. Direct human control, but with high cost and coverage limited to working hours — leaves the building uncontrolled outside that window, unless expensive rotating shifts are added.
3. Traditional video intercom. Lets you see and speak to whoever rings before letting them in, with no staffing cost — but still depends on someone being home to answer.
4. Electronic lock with code or card. Removes the need for a physical key, lets you disable lost or revoked access without changing the lock — but usually doesn't keep a detailed record of who used the access, unless it's a more advanced system.
5. Digital access control with an app. The owner opens the door from their phone, can grant temporary access to visitors or service providers remotely, and the system automatically logs who came in and when — the option closest to what the international smart-building market already treats as standard in new buildings.
What to Consider Before Choosing
- Size of the condominium. A small building with few access points benefits less from investing in a full digital solution than a large condominium with constant visitor and service-provider traffic
- Maintenance cost, not just installation. Digital systems carry recurring costs (software, support) that need to go into the annual budget, not just the upfront investment
- Who will manage the system day to day. Granting and revoking access, managing temporary codes — someone needs to stay responsible for this, even in an automated system
- Privacy and GDPR. Records of who enters and exits are personal data — the condominium needs a clear policy on who can access those records and for how long they're kept
The Most Common Transition Mistake
Switching systems without fully deactivating the old one — old physical keys keep working after a digital system is installed, because nobody changed the lock, they just added a new layer. This cancels out much of the security benefit of the switch.
How to Decide Without Overdoing It
Not every condominium needs the most advanced option. A small, stable building may get more value from solving the real problem (for example, replacing an expensive doorman with a video intercom) than from jumping straight to app-based access control — the right decision depends on the concrete problem being solved, not on the newest available technology.
Whatever option is chosen, the decision itself — and its associated cost — should go through an assembly resolution, properly documented, just like any other significant condominium expense.
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