In public places such as stations, airports, hospitals, and schools, telephone equipment faces frequent use and potential vandalism risks. To ensure the long-term reliable operation of these devices, vandal-resistant telephones have emerged. Vandal-resistant screw design is a core element in ensuring device security and durability.

Vandal-resistant screws are specially designed screws with a special treatment of their outer or internal structure, making them difficult to remove with ordinary tools. Compared to traditional screws, these screws often feature unique head shapes, such as cam, triangle, hexagonal, star, or safety cross, and may even incorporate special locking mechanisms to prevent unauthorized removal.

In vandal-resistant phones, these screws not only prevent malicious disassembly but also withstand long-term physical wear and corrosion, thereby extending the life of the device.

Vandal-resistant phones are often used in public places and must withstand frequent use, inclement weather, and the possibility of vandalism. In these situations, screws, as a key component securing the phone's casing and internal components, are crucial for their safety. Specific applications include:

• Casing Securing: Phone casings are often secured with anti-tamper screws to prevent disassembly or vandalism.
• Keyboard Protection: Some vandal-resistant phones also use specialized screws on their key modules and panels to prevent key removal or damage.
• Internal Structure Reinforcement: Internal electronic modules and connectors may also utilize anti-tamper screws to prevent unauthorized interference with wiring or circuitry.

The head design of an anti-tamper screw is its core feature. Common types include:

• Spanner Head: Two small holes that can only be turned with a special wrench.
• Tri-Wing: A triangular notch that cannot be removed with a standard screwdriver.
• Security Torx: A star-shaped screw with a small hole in the center.

These designs effectively prevent unauthorized disassembly and vandalism.

Tamper-resistant screws are typically made of high-strength stainless steel or alloys. They are rust-resistant, corrosion-resistant, and high-pressure-resistant, ensuring long-term outdoor use.

While tamper-resistant screws offer high resistance to tampering, manufacturers also design specialized tools to facilitate legitimate maintenance and replacement. For example, repair personnel can quickly remove them with a specialized screwdriver, making them difficult for ordinary users or vandals to open.

Tamper-resistant telephones are often used in public places. If screws are easily removed, the equipment is not only vulnerable to damage but could also pose a safety hazard or property damage. By using tamper-resistant screws, telephone equipment can:

• Extend service life: Reduce the frequency of repairs and replacements due to vandalism.
• Improve security: Protect internal circuitry and communication systems from unauthorized tampering.
• Reduce maintenance costs: Reduce frequent repairs and management costs.