The method of securing our residences and workplaces has experienced a great deal of transformation throughout the ages from the use of huge brass keys and tumblers to the latest, smart access control systems without any hassle. Security at the door has been a considerable change for the better in an age when convenience, security, and connection are the top priorities. A simple mechanical lock that performed its job perfectly has now turned into a smart system that integrates biometric sensors, wireless connectivity, and intelligent automation. The situation today is such that house owners, tenants, and entrepreneurs are all people giving more than just a bolt and a key. They demand power, presence, and mobility.
Enter the next generation of door security solutions, where codes, fingerprints, access logs, and remote approvals replace the traditional key. With this evolution, a company like WELOCK has stepped in to redefine how we think about locks.
Why the Shift? A Brief Look at the Evolution of Door Security
Mechanical Era: Keys & Locks
Physical keys and mechanical locks were the main barricades separating the interior from the exterior for hundreds of years. They were straightforward, dependable, and well-known. Yet they came with limitations: lost keys, unauthorized copies, restricted scalability, and no way to log or monitor who entered when. The key system demanded trust and often, constant vigilance.
Electronic Era: From Keypad to RFID
With the rise of electronics, keypad-entry systems and RFID access cards entered the scene. These solutions allowed codes to replace keys, cards to replace bulky metal. It was a step forward: administrators could change codes or deactivate cards without changing the whole lock. But many systems still required wiring, often lacked remote control, and weren’t always intuitive for everyday consumers.
Smart Era: Biometrics, Bluetooth, and App Control
Nowadays, access control has completely turned smart. Fingerprint recognition, Bluetooth, and WiFi connectivity, mobile applications, voice commands, and remote logs are all integrated into the contemporary user experience. Smart locks like the ones we are going to talk about not only allow you to assign several administrators but also to provide temporary codes for guests or personnel, to keep monitoring access from afar, and to change modes (code, fingerprint, card, app) as per requirement.
In short: from keys to codes and now beyond codes into biometrics and connectivity. This evolution is redefining what “locking your door” truly means.
Introducing the Company Behind the Innovation
When it comes to modern access control, WELOCK is one of the companies pushing boundaries. WELOCK is a global pioneer in smart lock and biometric security systems, recognized as the first innovator to integrate advanced fingerprint recognition into lock cylinders. Their vision goes beyond traditional locking mechanisms—offering homeowners, renters, and businesses an intelligent way to protect what matters most. By combining cutting-edge access technologies with practical design, WELOCK delivers a perfect balance between security, simplicity, and style. Whether for residential doors, offices, or rental properties, their products adapt to the growing demand for connected, user-friendly solutions.
By emphasizing European-profile cylinders and smart door solutions, they have created products that can be effortlessly integrated into houses, rental properties, offices, and smart living environments. Their dedication to smart security, simple installation, and digital control puts them in a good position in the rapidly changing door-lock market of today.
Model Spotlight: U81 Smart Cylinder, Big Features
What is the U81?
The U81 is a smart electronic door-lock cylinder intended for Euro-profile doors, and it provides a full six-in-one access system consisting of fingerprint, PIN code with anti-peek protection, RFID card, Bluetooth/app via smartphone, mechanical key (as backup), and voice control via Amazon Alexa (with optional WiFi bridge).
The U81 Smart Lock Cylinder is the ideal blend of safety and innovation. It is manufactured for Euro-profile doors and thus integrates perfectly into the majority of current arrangements while providing a large number of smart functions that enhance comfort during the day.
Key Features and Functionalities
- Six Unlocking Methods: Use fingerprint, PIN code, RFID card, smartphone (Bluetooth/app), mechanical key, or voice control (via Wi-Fi Box 3 and Alexa integration).
- Smart Wi-Fi Connectivity: When paired with the Wi-Fi Box 3, users can control the U81 remotely through a smartphone app, monitor entry logs in real time, and unlock the door via Alexa.
- Remote Management: Grant or revoke access to family members, staff, or guests anytime, anywhere. Perfect for Airbnb hosts and property managers.
- Enhanced Security: Features anti-peep PIN entry, allowing users to enter random numbers before or after the correct code to prevent shoulder-surfing.
- User Capacity: Supports up to 200 PIN codes, 100 fingerprints, and 199 RFID cards—suitable for homes or small offices.
- Long Battery Life: Powered by 4×AAA batteries, the lock can operate for up to 12 months. A low-battery indicator alerts you before power runs out.
- Mechanical Backup: Includes a traditional key slot for manual access in emergencies.
- Compatibility & Installation: Fits Euro-profile doors with a thickness of 60 mm – 115 mm and Door edge distance must be greater than or equal to 25mm. Designed for DIY installation—no complex wiring or drilling required.
- Smart Home Integration: Compatible with Alexa.Alexa voice control is compatible with WIFIBOX3.Customer Assurance
Every purchase comes with:
- Free shipping from Europe & UK warehouses
- 30-Day Money-Back Guarantee
- 2-Year Hassle-Free Warranty
- Lifetime Customer Support
The U81 is not just a lock—it’s a complete smart access solution that gives you control, comfort, and confidence in one sleek design.
Why it matters in the “from keys to codes” journey
The U81 embodies keyless entry, multi-user capacity, remote control, and biometric convenience, representing the evolution of door security from simple mechanical locks into a connected, high-function access system. Whether you’re a homeowner who wants no more messing with lost keys, or an Airbnb host who needs to manage guest access remotely, the U81 offers real progress.
Model Spotlight: Touch41 Fingerprint First, Smart Always
What is Touch41?
The Touch41 Smart Lock Cylinder takes the next step in biometric innovation, offering lightning-fast fingerprint access combined with robust multi-mode entry options. Its design blends security with ease of use, ensuring that unlocking your door is as simple as a touch.
The Touch41 can be combined with the Wi-Fi Box 3, integrated with Alexa, and unlocked via emergency USB in case of battery failure. When used with the Wi-Fi Box, the U81 can also be remotely controlled via smartphone and voice assistant, and integrated with Alexa.
Key Features and Functionalities
- Fingerprint Recognition: Unlock instantly with your fingerprint in under a second—no codes, no keys, no delay.
- Multi-Mode Access: Offers fingerprint, RFID card, PIN code, and mobile app control for versatile entry options.
- Wi-Fi Box 3 Integration: When connected to the Wi-Fi Box 3, the Touch41 can be managed remotely via smartphone or voice assistant. Integration with Alexa allows voice-activated unlocking or checking lock status.
- Emergency USB Unlock: In the rare event of battery failure, simply use an emergency USB power supply to restore temporary power and regain access.
- User Management: Store up to 100 fingerprints and multiple access codes, ideal for households, offices, or rental properties.
- Durability & Efficiency: Weather-resistant design suitable for both indoor and sheltered outdoor use.
- Door Compatibility: Fits Euro-profile doors with thickness between 55 mm – 105 mm, compatible with most modern European frames.
- DIY Installation: Simple and tool-free setup—swap out your existing cylinder in minutes without altering the door frame.
Customer Assurance
Like the U81, the Touch41 also includes:
- Free shipping from Europe & UK warehouses
- 30-Day Money-Back Guarantee
- 2-Year Hassle-Free Warranty
- Lifetime Customer Support
Why it enhance the evolution of access
Think of the Touch41 as a prime example of going beyond codes, moving into biometrics. While codes remain useful, fingerprints give an added layer of convenience and security (you can’t forget or lose your fingerprint). For the user looking to simplify access while maintaining strong security, the Touch41 hits the sweet spot.
Why Smart Locks Are More Than Just a Trend
Increased Security & Controlled Access
The conventional locks depend on the physical keys that can be lost, duplicated, or stolen. Smart locks, on the other hand, provide a much greater security option by enabling you the manage the systems you: temporary code generation, instant access revocation, and viewing of logs showing who has opened and when. The U81 and Touch41 models make the access and control of this level intuitive and easy.
Convenience and Flexibility
Having to fumble for a key, worry if someone forgot to lock up, or coordinate access for guests can be a hassle. Smart locks turn this around: enter with fingerprint, app, card, or code; grant guest access remotely; integrate with your smart home environment. For rentals, office entrances, or busy households, that convenience is a big deal.
Future-Proofing & Integration
As smart homes become more common, locks need to integrate smoothly with voice assistants, apps, remote monitoring, and other smart devices. Products like these are designed with that in mind, offering compatibility and growth pathways. The era of purely mechanical locks is essentially being phased out.
Peace of Mind Backed by Customer Promise
It’s not just the tech you also want assurance. With the offering of
- free shipping from European & UK warehouses.
- 30-Day Money-Back Guarantee.
- 2-Year Hassle-Free Warranty.
- Lifetime Customer Support.
You’re not just buying a lock you’re investing in a complete experience. These assurances help underline the seriousness of the smart-lock proposition.
Practical Considerations Before You Upgrade
Check Compatibility with Your Door
Even smart locks need to physically fit your door. The U81, for example, fits most Euro-profile cylinders and door thicknesses between 60–115 mm. Confirm the cylinder type and dimensions before purchase.
Installation Ease vs. Professional Setup
While many smart locks advertise “DIY install,” ensure you’re comfortable with the process. Tools may be required and proper alignment is important for reliability. The option to call a locksmith remains if you prefer not to DIY.
Power & Backup Options
Smart locks rely on batteries or wired power. The U81 runs on 4×AAA batteries and has a backup mechanical key in case of failure. It’s wise to keep a battery-change schedule and backup plan in mind.
Connectivity & App Setup
If you want remote access, voice control, or integration with other smart devices, make sure you have the proper gateway (for example WiFi bridge) and that your WiFi network is stable and secure. Lack of connectivity can hamper the “smart” aspect of the lock.
Security & Privacy
On the other hand, every wireless or biometric system comes with new risks attached to it. A slow WiFi connection, outdated firmware, or improperly configured apps may all lead to loss of security. Hence, it is highly recommended to use strong passwords, keep firmware updated, and follow the best practices for connected devices.
Conclusion
The transition from keys to codes and eventually to total smart-access solutions is a clear demonstration of the evolution of standard door security to meet modern needs. The U81 and Touch41 are prime examples of that development: access through multiple modes, biometrics, and remote control are all integrated with the app in an easy-to-use package supported by robust service and policies.
Investing in smart lock technology available today is not only a trend for the future but also a wise decision if you want to upgrade your front door, office entry, rental property or smart-home setup. The convenience, control, and peace of mind that smart locks bring are truly worth trying.
If you’re looking to upgrade your front door, office entry, rental property or smart-home setup, investing in today’s smart lock technology isn’t just trendy, it’s a smart move. The convenience, control, and peace of mind offered by smart locks are well worth exploring.
Black Friday Event: Unlock Savings!
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Final Price: €119
Coupon Code: VD50
Ships from European Warehouse
Includes 2-Year Warranty
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