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Battery free NFC smart lock: Unlocking a new security experience, it can be very intelligent even without a source

  • Writer: kerongi5
    kerongi5
  • Aug 27
  • 4 min read

Battery free NFC smart lock

In today's constantly evolving smart lock market, a lock that can achieve efficient intelligent management without the need for batteries is gradually becoming a new favorite in the security field - it is the battery free NFC smart lock. While breaking free from the constraints of batteries, precise authorization, time management, and record tracking can be achieved through mobile phones, redefining the security standard of "passive intelligence".



Battery free design: Say goodbye to range anxiety, easy to install

The most eye-catching feature of battery free NFC smart locks is that the lock itself does not require a built-in battery. Its power supply and unlocking principle is very clever: when a phone with NFC function approaches the lock, it uses NFC technology to achieve "reverse power supply" - the phone temporarily supplies power to the lock, while completing the exchange of encrypted information and the transmission of unlocking instructions.


· This design directly solves the two major pain points of traditional smart locks:

· No need for frequent battery replacement: avoids problems such as lock failure caused by battery depletion, leakage and damage to the lock body, especially suitable for high-frequency use or difficult to maintain scenarios (such as rental houses and public facilities); ​

· More flexible installation: No need to consider battery compartment design, smaller lock size, compatible with multiple door types (wooden, iron, glass, etc.), installation process similar to traditional mechanical locks, reducing the threshold for renovation.


Mobile app+NFC: dual intelligence, controllable and manageable permissions

The "intelligence" of the battery free NFC smart lock is reflected in the full process management achieved through the mobile app, making every unlocking "traceable, with rights and limitations":

1. Accurate authorization: Who can open it, when can it be opened, and how many times can it be opened? It's all up to you to decide

Through the accompanying app, administrators can generate electronic keys for designated users (family, friends, tenants, maintenance personnel, etc.) and customize the unlocking time period and frequency. For example:

Authorize the housekeeper to unlock once every Saturday morning from 9am to 12pm; ​

Authorize tenants to unlock from 0:00 to 24:00 every day during the lease term, with no limit on the number of times; ​

Authorize the repairman to unlock the door twice (upon entry and inspection) from 2:00 pm to 4:00 pm today. ​

After expiration, the permissions will automatically become invalid, so there is no need to worry about the security risk of "keys not being retrieved in a timely manner". ​

2. Record tracking: Every time the lock is unlocked, there is an "electronic bill"

The APP will record all unlocking behaviors in real time, including unlocking time, unlocking personnel, unlocking method (NFC proximity unlocking) and other information, forming an immutable operation log. Whether it is checking the time when family members return home in a family setting or tracing the entry and exit records of staff in a commercial setting, it can achieve "traceable" and clear responsibilities. ​

3. One phone with multiple locks: Say goodbye to keychains, with "universal access" in your pocket

A mobile phone can bind and manage multiple battery free NFC smart locks, whether it's the front door of the home, bedroom drawers, balcony cabinets, office filing cabinets, or warehouse doors. You don't need to carry a string of keys, you can unlock them by approaching them, greatly improving management efficiency.


Safety and durability: see the real chapter for details​

· In addition to its intelligent functions, the battery free NFC smart lock also stands the test of safety and durability:

· Encryption protection: NFC communication adopts bank level encryption protocol, and electronic keys cannot be copied. Compared with the risk of private key configuration in traditional mechanical locks, the security is even higher; ​

· Reliable Material: The lock body is mostly made of high-strength alloy material, which is resistant to prying, drilling, and corrosion. Some models have a protection level of up to IP54 and can cope with daily harsh environments such as rainwater and dust; ​

Emergency plan: If the phone runs out of battery or the NFC function temporarily malfunctions, some styles are equipped with an emergency mechanical keyhole, balancing the dual protection of intelligence and tradition.


Applicable scenarios: From households to businesses, security needs are fully covered​

· The flexibility of battery free NFC smart lock allows it to adapt to various scenarios:

· Family life: Set long-term permissions for family members, temporary permissions for visitors, no need to bring keys when going out, mobile phones are the "master key"; ​

· Short term rental/homestay: The landlord remotely authorizes the tenant to unlock the door, which automatically expires at the end of the lease period, without the need for on-site key handover, reducing management costs; ​

· Office scenario: Manage permissions for meeting rooms, filing cabinets, and equipment rooms to prevent unauthorized personnel from entering. Unlock records facilitate administrative audits; ​

· Public facilities such as express lockers, shared storage lockers, community convenience service points, etc., can be batch authorized to staff through the APP to reduce manual duty costs.


Conclusion: Passive intelligence makes security more "lightweight" and "stable"

The combination of "battery free+NFC+APP" for battery free NFC smart locks breaks people's inherent understanding that "smart locks must rely on batteries". It not only retains the advantages of convenient installation and simple maintenance of traditional locks, but also integrates the core functions of intelligent permission management and record tracking, truly achieving "lightweight upgrade and efficient security". ​

If you are tired of the hassle of frequent battery replacement and want to make lock management more worry free and secure, a battery free NFC smart lock may be the "one-time installation, long-term peace of mind" choice.

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