The "key from inside" type of lock used to be more common in America but it went out of favor in the mid-20th century. You can buy them, of course, and they do have uses, but it's more typical for the inside of a door to just have a latch (deadbolt, too) that doesn't require a key to exit the premises.
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The "key from inside" type of lock used to be more common in America but it went out of favor in the mid-20th century. You can buy them, of course, and they do have uses, but it's more typical for the inside of a door to just have a latch (deadbolt, too) that doesn't require a key to exit the premises.