Feel unsafe in survival? Afraid your stuff may be stolen? Not anymore now you can lock/protect your chests from those nasty thieves! I'll give the list of commands you can use and explain them.
All these commands are done by looking at a certain chest:
./chest protect Protects/Locks your chest
./chest add {USERNAME} Adds your friend or stranger to the chest so they can access it
./chest remove {USERNAME} Removes your friend or stranger from the chest
./chest info Checks who locked the chest and the added people to it