Lockable chests

I think you should add a padlock item that you can right click on a block to activate a pin to open to where you would enter a pin and the chest would open, if it is incorrect, after three tries, it will permanently lock for a minute, also it will protect from griefers and thieves that want to steal your stuff, because I left a lot in a shulker box and got it deleted entirely, Mojang please fix this