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I always found the mechanics of airport luggage trolley systems engaging. It's not just about the wheels, but the deposit/release system. ELI5 threads usually focus on the straightforward physics: you put in a coin or token, and that releases the locking mechanism allowing you to detach a trolley. But what's really happening inside those systems? Are there different designs that are more or less vulnerable to being bypassed?
Beyond the simple coin or token release,I've also noticed some systems use card swipes or even app-based payments now. It would be fascinating to understand if these newer, more technologically advanced systems are actually more secure or offer any notable benefits beyond cashless payment. Are thay easier to maintain or less prone to mechanical failures compared to the classic coin-operated ones? Has anyone encountered particularly clever or baffling mechanisms on luggage trolleys around the world?