What are the tamper-evident designs for stainless steel outdoor trash can locks?

Stainless steel outdoor trash cans require robust locking systems to prevent unauthorized access, deter vandalism, and maintain cleanliness in public spaces. Several tamper-evident designs enhance security for these essential urban fixtures. One-way screw mechanisms are commonly used to fasten lock components, allowing installation but preventing removal without specialized tools. Shielded cylinder designs protect the lock core from drilling, picking, or physical manipulation by enclosing it within a reinforced steel housing. Breakaway hasps feature frangible components that shear under excessive force, revealing attempted forced entry while maintaining lock integrity. Integrated locking bars often span the lid's interior, engaging with multiple anchor points to distribute force and resist prying. Many modern designs incorporate visible security indicators—such as colored flags or status windows—that change appearance when tampering occurs. These mechanisms are typically constructed from 304 or 316 stainless steel to resist corrosion and withstand outdoor conditions. Commercial-grade locks may also include key-retention systems that prevent key removal until the lock is fully engaged, ensuring proper operation. These tamper-evident features work collectively to provide visible evidence of interference while maintaining functional durability in high-traffic environments.