Smart Locks

Are they worth it?

Rethinking Access

Smart Locks and the Evolution of Entry Systems

As digital integration increasingly permeates architectural design, one innovation has quietly revolutionised the way we think about building access: the smart lock. Once the realm of futuristic speculation, smart locks are now a practical and rapidly advancing solution for both residential and commercial projects. For architects and designers, understanding the nuances of these devices—how they work, what options are available, and where their strengths and weaknesses lie—has become essential.

Types of smart locks

Smart locks come in several varieties, each offering different features and levels of integration. The most common types include:

1. Keypad Locks:
These utilise a numerical code input on a touchscreen or physical buttons. They're simple, reliable, and popular in both homes and offices.

2. Bluetooth-Enabled Locks:
Using a smartphone’s Bluetooth connection, these locks can detect proximity and unlock automatically or via an app. They are convenient but have a limited range.

3. Wi-Fi-Connected Locks:
Wi-Fi locks offer remote access, allowing users to control and monitor the lock from anywhere. This is particularly useful for short-term rentals, property managers, or multi-unit buildings.

4. Biometric Locks:
These incorporate fingerprint or facial recognition technology for access. They're typically found in high-security environments or luxury properties.

5. Retrofit Locks:
Designed to work with existing deadbolts, these allow users to add smart functionality without replacing the entire locking system. This is a major consideration in heritage properties or where conservation restrictions apply.

6. NFC or RFID Locks:
Common in hotels and commercial applications, these locks are triggered by cards, fobs, or even smartphones equipped with NFC capabilities.

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How smart locks work

At the core of any smart lock is an electromechanical mechanism that engages or disengages the bolt when triggered by an authorised device. Most locks use an app or central hub for configuration, allowing for user management, access schedules, and activity logs.

Integration with home automation systems like Apple HomeKit, Google Home, or Amazon Alexa adds another layer of functionality, enabling voice commands, routine settings (e.g., locking every night at 10 p.m.), and real-time notifications.

Security protocols such as end-to-end encryption and two-factor authentication are increasingly standard, but they vary between manufacturers and models. For commercial projects, compliance with data protection regulations (such as GDPR in the UK/EU) may influence product selection.

Installation

Simplicity Meets Complexity

From a design and installation standpoint, smart locks vary significantly in complexity. Many models are marketed as DIY-friendly, requiring just a screwdriver and a smartphone. These are ideal for retrofit situations or homeowner upgrades.

However, integrating smart locks into new builds or large developments presents a different challenge. Coordination with electricians, network infrastructure, and overall building automation must be considered. For architects, this means early planning with consultants and understanding the compatibility between selected smart locks and other smart systems.

Battery life is another design factor. Most models rely on AA batteries, which can last anywhere from six months to a year, depending on usage. Visual and audio low-battery warnings are common, but for larger projects, planning maintenance schedules is advisable.

Advantages:

Convenience: Keyless entry means no more lost or copied keys. Access can be granted or revoked remotely.
Security: Advanced features like activity logs, timed access, and biometric identification enhance control.
Design Flexibility: Minimalist and sleek form factors align well with contemporary architectural aesthetics.
Integration: Seamless compatibility with smart home or building management systems enables holistic control.

Disadvantages:

Reliance on Power and Connectivity: Wi-Fi or Bluetooth failures can leave users locked out—though most smart locks retain manual key or backup options.
Hacking Concerns: Like all connected devices, smart locks are vulnerable to cyber threats if not properly secured.
Cost: They are significantly more expensive than traditional locks, both in initial cost and ongoing maintenance.
Learning Curve: For some users, particularly in commercial or communal settings, the technology can be a barrier rather than a benefit.

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