Keys & Locks

Give your doors and chests a [b]real key[/b], not a redstone puzzle. Keys & Locks adds personal locks: a door or chest bonds to the [i]one[/i] key that keys it, and after that only a matching key opens it — no master keys, no universal picks, no vanilla lever bypass.

How it works

- Craft a [b]Key Blank[/b] — a plain, codeless blank.
- Bring it to the [b]Key Cutting Bench[/b] and cut it: dial a 4-digit code on the arrow buttons (or copy the code straight off an existing key by dropping it in the template slot) and give the new key a name.
- Place a locked door or a locked chest. Fresh out of the box it's unkeyed and opens like a normal one.
- Sneak + right-click it with your freshly cut key. That's it — the lock is now bonded to that key's code, [b]permanently[/b]. There's no re-keying; if you lose the key, the only way to reset the lock is to break the block and place a new one.
- From then on, only a key with the matching code opens it. Anyone else gets a "locked" sound and an action-bar message — redstone, hoppers-on-doors, villagers, none of it gets through either.

What's inside

- 4 door tiers — iron, diamond-reinforced iron, netherite-reinforced iron, and obsidian doors, each available in a locked or unlocked variant, each tougher (and slower) to break than the last.
- Locked chests and locked trapped chests — built from a vanilla chest/trapped chest plus a Lockitem. Double chests are supported; a merged locked chest shows a single padlock on the shared latch, and its merge state freezes the moment it's keyed.
- Named, coded keys — every key carries a 4-digit code and a name you choose. The name shows up in your inventory and flashes over the hotbar when you pick the key up; the code itself stays hidden unless you turn on advanced tooltips (F3+H), just like a real key doesn't wear its cuts on a label.
- Key Cutting Bench — an anvil-style GUI: dial a code by hand for a fresh lock, or drop an existing key in as a template to stamp out a spare with the same code (and a name of your choosing) without ever touching the original.

Why

Vanilla Minecraft has no real answer to "this is my stuff, and only my key opens it." Keys & Locks is built around one rule: [b]a lock bonds to the first matching key it meets, and stays bonded forever.[/b] No duplicating access with a lever, no picking with a matching-tier tool, no accidental villager or piston bypass — if you don't have the key, you're not getting in without breaking the block down.