3.0 Hardware Design
3.1 Design Objectives
The hardware design of SEC.AGI is driven by a single objective: to make security decisions unavoidable once the device is attached. Every physical and electrical design choice is intended to eliminate bypass paths, reduce attack surface, and ensure that security actions cannot be externally overridden.
Unlike consumer electronics that prioritize aesthetics or modular repairability, SEC.AGI prioritizes integrity, durability, and tamper resistance. The device is not designed to be serviced, opened, or modified after deployment. Its role is to observe, decide, and enforce security outcomes throughout its operational lifetime.
To achieve this, the hardware must satisfy several constraints simultaneously:
Operate independently without reliance on external power or connectivity
Survive real-world handling, transport, and environmental stress
Detect and respond to physical manipulation attempts
Enforce irreversible security actions when required
3.2 Form Factor and Physical Construction
SEC.AGI is implemented as a compact, low-profile security pad with a square footprint and rounded edges. This form factor allows the device to be attached discreetly to a wide range of objects without interfering with their normal use.
The enclosure is designed as a sealed, layered assembly:
Top shell composed of a ceramic or reinforced glass composite, selected for scratch resistance and thermal stability
Structural frame made from anodized aluminum or stainless steel, providing rigidity and resistance to deformation
Base layer incorporating an industrial-grade adhesive interface engineered to bond permanently to common materials such as polycarbonate, aluminum, steel, and composites
The enclosure has no external fasteners, seams, or access points. Any attempt to pry, bend, or separate layers is treated as a security-relevant event and evaluated by the sensing system.
3.3 Tamper-Aware Mechanical Design
The mechanical structure of SEC.AGI is intentionally designed to behave as a sensor.
Micro-flex regions within the frame allow the device to detect abnormal stress patterns, while internal pressure and deformation sensors register attempts to peel, pry, or compress the device. These signals are correlated with motion and timing data to distinguish routine handling from forced removal.
Rather than relying on a single tamper switch, SEC.AGI employs multi-point mechanical awareness, making it difficult to probe or disable the device without triggering detection.
3.4 Sensor Stack
The sensor stack forms the foundation of SEC.AGI’s situational awareness. Sensors are selected not for novelty, but for their reliability and complementary coverage.
Motion and Inertial Sensors
High-precision accelerometers and gyroscopes monitor movement, vibration, and orientation. These sensors allow SEC.AGI to detect patterns such as repeated probing, abnormal handling sequences, or movement inconsistent with the owner’s historical behavior.
Force and Pressure Sensors
Distributed force sensors detect compression, prying pressure, and sudden mechanical stress. These inputs are critical for identifying forced access attempts that do not involve visible movement.
Thermal Sensors
Temperature monitoring enables detection of heat-based attacks such as drilling, cutting, or exposure to extreme environments intended to weaken adhesives or materials.
Electromagnetic Monitoring
SEC.AGI includes detection of electromagnetic anomalies associated with probing, fault injection attempts, or unauthorized electronic interference.
All sensor data is processed locally and never exposed externally in raw form.
3.5 Secure Processing and Isolation
At the core of the hardware architecture is a dedicated secure processing environment designed to isolate security-critical functions from all other system components.
This includes:
A secure element responsible for cryptographic operations, key storage, and ownership enforcement
An isolated execution environment for security logic and irreversible decision paths
A hardware-enforced boot chain that prevents unauthorized firmware modification
Once deployed, the system cannot be downgraded, reflashed, or reset without cryptographic authorization from the owner. Attempts to manipulate firmware or interrupt execution are treated as hostile events.
3.6 Power Architecture
SEC.AGI is powered by an internal micro-battery optimized for long-term standby operation. The device spends the majority of its time in an ultra-low-power monitoring state, waking selectively to process sensor data or escalate events.
Power design priorities include:
Months-long operational lifespan between charges
Guaranteed reserve capacity for critical security actions
Safe degradation behavior under low-power conditions
Even in scenarios where the battery is critically depleted, SEC.AGI maintains sufficient reserve power to execute final security actions such as cryptographic key erasure or permanent lock.
3.7 Indicators and External Signaling
SEC.AGI is intentionally minimal in its outward signaling. The device includes only passive visual indicators to communicate internal state during normal operation.
There are no speakers, alarms, or attention-seeking outputs. Audible or visible alerts are considered a liability in many security scenarios and are instead routed privately to the owner’s authorized device.
This design reinforces the principle that security should remain unobtrusive until action is required.
3.8 Durability and Environmental Tolerance
SEC.AGI is designed for deployment in uncontrolled environments. The device is resistant to dust, moisture, shock, and vibration associated with travel and storage.
Operational tolerances are selected to ensure reliable performance across a wide range of temperatures and handling conditions, without compromising sensor accuracy or adhesive integrity.
3.9 Hardware Trust Boundary
The hardware of SEC.AGI defines a clear trust boundary. Everything inside the enclosure is trusted; everything outside is not.
This boundary is enforced physically, electrically, and cryptographically. Once the device is attached and ownership is assigned, all meaningful security decisions originate within this boundary and cannot be delegated or overridden externally.