That's a really interesting and practical question. Yes, absolutely. In many cities around the world, you'll find public trash cans specifically engineered to discourage or prevent diving, which is often referred to as scavenging. The primary goals are usually to maintain public hygiene, reduce litter scatter, protect people from potential harm, and in some cases, protect sensitive discarded information.
The designs vary, but here are some common features you might encounter:
1. Secure, Small-Aperture Openings: These bins have a fixed lid with only a small slot or hole for depositing trash, often just big enough for a coffee cup or food wrapper. It's virtually impossible to reach inside to retrieve items.
2. Integrated Compactors: Some solar-powered "smart" bins compact the waste internally. This not only increases capacity but also crushes and tightly packs the contents, making retrieval difficult and unsanitary.
3. Full Enclosure and Locking Mechanisms: Bins in areas with high concerns about sensitive waste (like near government buildings) may be fully enclosed and emptied by authorized personnel using a key or code. The classic "mailbox" style slot is a simple form of this.
4. Weight-Sensitive or Smart Lids: Certain designs feature lids that close and lock after sensing the waste has been deposited, or they are on a timer. Others may only open when an RFID chip from a municipal collection truck is nearby.
5. Smooth, Unclimbable Surfaces and Anchored Designs: To prevent tipping or climbing, these bins are often heavily anchored to the ground and have smooth, rounded exteriors without footholds.
It's worth noting that the implementation of such bins is often part of a broader urban policy conversation. While they effectively deter diving and reduce mess, critics sometimes argue they can disproportionately affect homeless populations or individuals who rely on scavenging for income or necessities. Therefore, their use is often balanced with other social services and waste reduction strategies. So next time you're in a city center, take a closer look at the trash bin—its design might be more thoughtful than it first appears.