In 2026, the Matter protocol has evolved from a value-added feature for high-end smart locks into a core entry threshold for premium markets in Europe and the United States. For global lock manufacturers, the core commercial value of Matter lies in enabling a single smart lock, through one R&D cycle and one certification, to achieve seamless compatibility with the world’s leading platforms including Apple HomeKit, Google Home, and Amazon Alexa, delivering cross-regional, full-market coverage. This is the core essence of cross-ecosystem integrated design for smart locks.

To truly deliver on this goal, while chip and software protocol adaptation is a fundamental prerequisite, the upgrade of underlying manufacturing processes for the lock’s core mechanical components is the critical foundation for breaking through bottlenecks in mass production, performance, and security.

1. Matter Has Become a Mandatory Access Rule for the Global High-End Smart Lock Market

The full mass adoption of Matter has shifted from an industry trend to an established market rule, with its market enforceability backed by clear industry data and regulatory specifications:

Matter’s requirements for smart locks are by no means limited to simple chip installation and software adaptation. Instead, they set four non-negotiable mandatory requirements for lock body space design, mechanical precision, security standards, and mass production consistency — requirements that directly push the capability limits of traditional manufacturing processes.

2. Four Core Manufacturing Bottlenecks for High-End Smart Locks in the Matter Era

Traditional CNC machining, stamping, and casting processes can no longer simultaneously meet Matter’s four core requirements, creating a common pain point for high-end lock manufacturers worldwide:

Conflict Between Fixed Lock Body Dimensions and Additional Hardware Requirements

To obtain Matter certification, smart locks must be equipped with a Thread communication module, end-to-end secure encryption chip, redundant safety sensors, and an emergency backup power system. Compared with traditional Bluetooth smart locks, these components take up an average of 35% additional internal space within the lock body.

However, the European and US markets have mandatory unified standards for lock body dimensions (ANSI/BHMA A156.13 for the US market, DIN 18251 for the European market), meaning lock body specifications cannot be arbitrarily adjusted. With traditional processes, core mechanical components need to be processed as multiple separate parts, requiring reserved redundant space for assembly. This makes effective volume compression impossible, forcing manufacturers into a dilemma between compromising on exterior thickness and scaling back security structures.

Mandatory Mechanical Precision Requirements Under Certification Standards

Leading ecosystems and industry specifications clearly stipulate that Matter-enabled smart locks must have a local unlock command response time of ≤ 300ms and a lock/unlock status synchronization error of ≤ 0.5%. Failure to meet these thresholds will result in certification failure.

Clutches, transmission gear sets, and bolt assemblies produced via traditional processes require assembly from 5 to 8 independent parts. The machining tolerances of each part are cumulative, resulting in an overall error of up to ±0.1mm or more, which is highly likely to cause command delays and status drift.

The Core Conflict Between Component Miniaturization and Security Performance

The core competitiveness of high-end smart locks lies in their security performance. The European and US markets require products to pass the top-tier security certifications of ANSI/BHMA A156.2 Grade 1 and EN 12209 Grade 1, which explicitly mandate a minimum bolt side load capacity of 44.5kN and a minimum cylinder drill resistance time of 10 minutes.

However, Matter hardware occupies critical internal space in the lock body, forcing the miniaturization of core mechanical components. Kwikset’s 2024 R&D test data shows that miniaturized lock components produced via traditional processes have a 42% lower impact resistance than standard-size components, failing to meet top-tier security requirements.

Stringent Certification Threshold for Global Mass Production Consistency

Matter’s Product Family Certification (PFC) rules allow manufacturers to certify an entire product line through a single test, significantly reducing certification costs. However, the core prerequisite is that the mechanical performance and precision of products in the same series must be fully consistent, regardless of the production base or production batch.

Traditional machining relies heavily on skilled technicians, resulting in inter-batch dimensional deviations of up to ±0.2mm and a conventional mass production yield rate of only around 85% — unable to meet the consistency requirements. This forces manufacturers to pay separate certification fees for each batch and each production base, drastically increasing the cost and threshold of global expansion.

3. Metal Injection Molding (MIM): A Proven Solution to Smart Lock Manufacturing Bottlenecks in the Matter Era

Metal Injection Molding (MIM) is not a new laboratory technology, but a proven solution that can systematically address all four of the aforementioned bottlenecks simultaneously. It has been validated in mass production by the world’s leading lock manufacturers, with core values that fully align with the core requirements of high-end smart locks:

Integrated Molding Redefines Space Utilization to Resolve Lock Body Space Conflicts

MIM’s near-net-shape capability enables the integration of 5 to 8 independent components — such as clutches, multi-stage transmission gear sets, and tamper-proof bolt assemblies, which require separate processing with traditional methods — into a single part, molded completely in one step. This eliminates the need to reserve redundant space for fasteners and joint surfaces, reducing the volume of the core mechanical structure by more than 40% and freeing up the installation space required for Matter hardware.

Without adjusting the standard lock body dimensions or scaling back security structures, manufacturers can simultaneously meet the requirements of Matter hardware layout and compatibility with globally universal lock bodies, breaking the dilemma of traditional processes.

Micron-Level Molding Precision Improves Certification Pass Rate and Product Reliability

In mass production, MIM technology achieves a stable dimensional tolerance of ±0.03mm for small precision lock components, with a surface roughness Ra < 1.6μm. It meets precision transmission requirements without secondary processing, fundamentally eliminating the cumulative tolerance issues caused by multi-part assembly.

This enables the lock’s mechanical response time to be stably controlled within 150ms, well below the industry’s 300ms threshold, avoiding certification failures caused by command delays and status drift.

High-Performance Material Compatibility Balances Miniaturization and Top-Tier Security Performance

MIM technology is flexibly compatible with high-security specialty materials such as 17-4PH precipitation hardening stainless steel and tungsten-nickel alloys — materials that are extremely difficult and costly to process with traditional CNC machining. After sintering, MIM components can achieve a density of over 95%, and 17-4PH stainless steel MIM parts have a tensile strength of over 1100MPa, with mechanical properties close to those of forged parts.

Even for micro lock bolts and drill-resistant cylinder structures with significantly reduced volume, MIM can stably meet the requirements of Europe and the US’s top-tier security certifications, resolving the industry’s core conflict that “miniaturization requires sacrificing security performance”.

The currently mass-produced Assa Abloy Level Lock+ Matter Edition and Kwikset Halo Select series all adopt MIM core components, reducing the lock body volume by 28%-40% while fully retaining the ANSI Grade 1 top-tier security certification.

Fully Automated Mass Production Ensures Global Product Consistency and Lowers Global Expansion Thresholds

MIM is a fully automated high-volume production process, with daily production independent of skilled CNC technicians. It achieves a stable inter-batch dimensional deviation of ≤ ±0.02mm and a mass production yield rate consistently above 98%.

Regardless of which production base a manufacturer uses for mass production anywhere in the world, MIM ensures full consistency in the mechanical performance and precision of all products, perfectly meeting the consistency requirements of Matter’s Product Family Certification. This allows manufacturers to certify a global full product line with a single test, cutting certification costs by 70% and significantly shortening product launch cycles. Meanwhile, integrated molding drastically reduces the number of part numbers and suppliers, lowering the management complexity and inventory costs of global supply chains.

Conclusion

For a long time, MIM technology has been defined in the lock industry primarily as a cost-reducing alternative to traditional CNC machining. However, in the current era of full Matter adoption, its value has long gone beyond mere manufacturing cost optimization.

It serves as the underlying foundation for high-end lock manufacturers to achieve cross-ecosystem integrated design, a proven solution to the four core bottlenecks of space, precision, security, and mass production, and a critical strategic asset for lock manufacturers to access high-end global markets and build differentiated core competitiveness.

Matter is not a short-term trend in the smart lock industry, but a long-term universal standard for the global high-end market. The brands that will gain a firm foothold in this era will by no means be those that only complete basic protocol adaptation, but those that can truly deliver on the core values of “global compatibility, stability and reliability, security and compliance” through the upgrade of underlying manufacturing processes.