Keys and Locked Doors

You've probably seen this idea before, but I added my own thing. It would be if you could make locked doors that can be opened with a key made out of copper. You would use the regular door recipe but with a tripwire hook on the side to make it a locked door. It could be any wood type, and you wouldn't be able to open. However, you could make a key out of copper, giving copper another use. It could be made in an upside-down L-shape as shown below. You could also put a certain wood type with it in the recipe to make it so that it only unlocks doors of that same wood type.

Locked door recipe:

|Wood|Wood|

|Wood|Wood|Tripwire Hook|

|Wood|Wood

Key recipe:

|Copper|Copper|

|Copper|Wood|

|Copper|