Rarest Logic | Educational 🧠 on Instagram: "Handcuffs—officially called restraint devices—are designed for one purpose: to limit the movement of a person’s wrists in a way that’s strong, secure, and nearly impossible to remove without a key. Law enforcement uses them for safety, control, and detention. But not all handcuffs are the same. There are metal chain cuffs (the classic kind with a short chain linking the wrists), hinged cuffs (which restrict movement even more by replacing the chain wi