Locks, Lockpicking, and Sabotage

A locked door or chest in Last Frontier isn’t a dead end — it’s a puzzle with several solutions: find the key, pick the lock, bypass it through a technical panel, or simply walk away from the unnecessary risk. This article breaks down exactly how the game decides whether a lock opens, and why the “quiet thief” and the “tech specialist” open different doors in different ways.

What a locked object is

Any lockable object in the game is a lock. The very same lock can simultaneously be a door, a container, or both. A lock has several key states:

• Locked — while a lock is locked, it can’t be opened without a key or picking.
• Electronic or mechanical — this determines what can be used to crack the lock at all.
• Difficulty — a hidden threshold you need to “break through” when picking. The player is never shown this number.
• Unopenable — some objects can’t be opened at all and simply respond that there’s nothing to use here.

The simplest path: the key

If your inventory holds a key tied to this lock, the object opens immediately — no mini-process and no skill checks. The key can also be applied directly onto the lock. If you don’t have the right key, the door or container won’t open: you’ll get a message that a key is needed, and a private KEY hint will flash above the object (only you can see it).

One separate detail about doors: even after you unlock a door, you can’t close it “on someone” — if a creature is standing on the door’s tile, toggling the state is rejected.

Picking the lock

When there’s no key, the lockpick comes into play — you apply it as an item onto the lock. A visible picking process starts: roughly a hundred short steps with progress shown as a percentage. The process is interrupted if you, the lockpick, or the lock itself disappear, or if you move farther than the interaction distance. So picking is always time you spend standing in place.

The lockpick type must match the lock type

The main rule: an electronic lockpick opens only electronic locks, and a mechanical one only mechanical locks. A mismatch is a guaranteed failure with a TOOL hint. Before spending time on picking, make sure the tool fits the lock.

No luck — only the threshold

Picking in Last Frontier is deterministic: there is no random roll. The lock opens when the total “picking power” is at least equal to the lock’s hidden difficulty. The power is made up of the lockpick’s own points plus bonuses from abilities, and the bonuses depend on the lock type:

• A mechanical lock is boosted by the “quiet” path of Infiltration (physical break-in) and the technical ability “Mechanical bypass”.
• An electronic lock is boosted by the technical abilities “Electro probe” and “Circuit bypass”.

This is exactly the split between the two roles: Infiltration handles quiet physical access, while Mechanics handles mechanical and electronic break-in power. They get through the same set of locks via different development branches.

The “quiet thief” bonus doesn’t always apply

The physical break-in power from Infiltration is added only if all conditions are met at once: you’re in stealth mode, the lock is mechanical, you’re on the same map as it, and there’s no living NPC witness nearby who sees you at the lock. The moment you catch a guard’s eye or simply drop out of stealth, the bonus falls back to its base value, and the difficulty threshold may become unreachable. The technical path, however, doesn’t depend on this.

Lockpick consumption and hints

A lockpick is consumed on a successful pick only if it’s marked as single-use; failed attempts never eat up a lockpick. At the end of an attempt you see a private hint above the object:

• OPEN — can be opened (or is already open);
• TOOL — wrong lockpick type;
• LOW — break-in power falls short of the difficulty;
• KEY — locked, a key is needed.

These markers are visible only to you, and the exact difficulty numbers and your points stay on the server side — a rival can’t work anything out from the hint.

Bypassing through technical panels

Electronic locks can be cracked not head-on, but through a linked technical panel on the map. On a successful bypass, a door circuit panel unlocks and opens all the electronic locks tied to it at once — handy when a door is stubborn and the junction box is right next to it.

Bypassing a panel is also deterministic: you need electronic-tool points (an electronic lockpick or probe) plus the power of the “Electro probe” and “Circuit bypass” abilities, totaling no less than the panel’s difficulty. Current panels require specifically an electronic tool — you can’t bypass such a panel barehanded. A successful bypass is a permanent state of the panel; the tool is consumed only if it’s single-use. The hints here are their own: PROBE (a probe/tool is needed), TOOL, LOW, and DONE on success.

Besides doors, there are also sabotage panels: when bypassed, a security terminal shuts down nearby only ownerless turrets and drones (with no owner) — it doesn’t touch your own deployed or captured devices.

Sabotage and theft: you can be seen

The Infiltration branch isn’t only about locks. It also includes stealing from NPC inventories, planting items, stealthy movement, and silent attacks. An important mechanic for the “thief”: the consequences depend on witnesses, not just on skill.

• Theft spotted by the victim’s NPC ally or a faction guard hits your reputation with that faction and may raise an alarm among the guards. You’ll be shown that you were spotted.
• An NPC who has something worth stealing is marked with an STL badge — but only someone carrying a theft tool can see it.
• Robbing live players is less rewarding: the amount stolen from a player target is reduced.

In other words, quiet access to a lock and quiet theft are about the absence of an audience just as much as about a leveled-up skill. The best break-in is the one nobody saw.