No they don't have a problem with edge detection, it's just how sensitive they want to make the metal detectors/xrays. They can beep at the little rivets in yo

No they don't have a problem with edge detection, it's just how sensitive they want to make the metal detectors/xrays. They can beep at the little rivets in your jeans if they wanted to. I brought safety razor blades with me in a SE asia trip and the only place that found them/cared about them was China.