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Tamper-Proof Mesh for POS Terminals

The tamper-proof printed circuit for POS terminals features a thin, lightweight, and durable design. It not only effectively addresses the industry pain points of traditional POS devices—excessive thickness and high costs—but also aligns with the stringent confidentiality requirements for property and information security in financial payment products. Once the tamper-proof printed circuit suffers physical damage, it will immediately trigger the automatic lockout mechanism of the POS terminal system, building a solid payment security barrier at the hardware level.

    Silver flexible touch circuit composite insulation structure

    Base PET Substrate
    Top Dielectric Layer
    Adhesive
    Release Film

    Common Material

    Silver Ink

    The silver flexible touch circuit offers excellent conductive stability and features flexible printing processes, allowing it to adapt to complex internal layouts of devices while maintaining a thin thickness. Its anti-tampering logic relies on the fragile nature of the silver flexible touch circuit: once subjected to operations such as peeling or prying, the conductive layer is prone to breaking, which quickly triggers the POS terminal system to lock. It is well-suited for portable POS devices with high requirements for printed circuit.

    Double-layer anti-tear composite circuit structure

    MH
    Membrane Switch Layers Overview (2)
    MH3
    MH4
    MH5
    MH6
    MH7
    MH8
    MH9
    MH10

    Common Material

    PC

    This printed circuit adopts double-sided printing technology. With its multi-layer protective design, it features excellent abrasion resistance and bending resistance, enabling it to readily withstand mechanical wear and tear caused by daily movement and frequent operation of POS terminals. It boasts diverse structural designs and comprehensively meets the security and practical requirements of POS terminals in terms of production, adaptability, and durability.

    Mesh performance parameter

    Item Parameter
    Response Time: <10ms
    Recovery Time: 15ms
    Operating Voltage:  3.3V
    Operating Temperature: -20℃ to 60℃
    Electromagnetic Interference (EMI): None Generated
    Electrostatic Discharge (ESD):  Insensitive; Insulation Resistance: >100MΩ
    Flame Rating:  UL-94V0
    Adhesive Bond Strength:  >6N/25mm
    Salt Spray Test Requirement:  Temperature 35±2℃, 5% Sodium Chloride Solution, pH 6.5~7.2, Duration 48H
    Alternating Damp Heat Test:  Temperature 25~55℃, RH 95%, 24H per cycle, Total 6 cycles
    Trigger Circuit: Conductor Width (a):  0.15≤a≤0.2mm; Conductor Spacing (b): 0.15≤b≤0.2mm
    Alarm Principle:  Under normal conditions, the alarm receives one pulse every 0.2s; Alarm triggers when pulse interval exceeds 0.2s
    Service Life:  ≥500,000 Cycles (50W+ Cycles)
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