What type of lock requires a stiff wire with a hook to pry it open?

The type of lock that requires a stiff wire with a hook to pry it open is typically an exit device. Exit devices, also known as panic bars or crash bars, are designed for emergency exits and often have mechanisms that can be manipulated from the inside. These devices are usually manufactured to allow people to exit quickly in case of an emergency, but this can also make them vulnerable to being bypassed with a suitable tool, such as a stiff wire.

In contrast, deadbolts are designed to be more secure and typically require a key or a specific turning motion to unlock, making them less susceptible to being pried open with makeshift tools. Standard door locks require keys and have internal mechanisms that do not lend themselves to being opened with a wire. Padlocks, while they can sometimes be vulnerable to manipulation, typically require the correct key or combination, which is distinct from the prying technique described in the question.