Probably Stolen Access Keycards: Types, Crates & Desequencer
Disposable keycards are single-use contraband that open locked supply crates and lockers of their department. Command (125 Credits) opens most locks. Blank keycards (15) can be written with any access in a Cryptographic Desequencer using the matching chip. Four matching cards can also be traded for a crate at the Underground Exchange.
On this page
All keycards
| Keycard | Base value | Opens |
|---|---|---|
| Command | 125 | Most keycard locks |
| Security | 100 | Security Department locks (Evidence Locker, Armory crate) |
| Research | 100 | Science Department locks |
| Engineering | 75 | Engineering locks (Engineering Foundry crate) |
| Medical | 75 | Medical locks (Medical Bay crate) |
| Service | 40 | Service locks (Service Department crate) |
| Supply | 40 | Supply locks |
| Blank | 15 | Nothing until written in a Desequencer |
All written keycards are contraband and single-use. Keep them out of sight during inspections.
Locked crates
| Crate | Base value | Notes |
|---|---|---|
| Security Department Evidence Locker | 200 | Contraband; “valuable” |
| Security Department Supply Crate | 200 | Contraband; armory supplies |
| Engineering Foundry Supply Crate | 200 | Engineering supplies |
| Medical Bay Supply Crate | 200 | Medical supplies |
| Service Department Supply Crate | 175 | Service supplies |
Writing a blank keycard
- 01
Get a Cryptographic Desequencer
350 base Credits, contraband, needs energy and runs overnight.
- 02
Insert the access chip
Chips: Command 350, Security 300, Engineering 250, Medical 250, Service 200, Supply 200.
- 03
Add a Blank Keycard and power
The next morning the blank card carries that department’s access.
Keycards at the Underground Exchange
One Command Keycard trades for two random Security, Engineering or Medical cards. When the promotion is active, 3 Security, 4 Engineering or 4 Medical cards trade for a locked crate of that department.
The Fence start begins with three keycards.
Common questions
What does the access card do in Probably Stolen?
Disposable keycards open locked crates and lockers of their department once. Command opens most locks.
How do I make keycards?
Put a Blank Keycard and the department chip into a powered Cryptographic Desequencer overnight.
Sources & version notes
Community game-data research. Sources reviewed October 31, 2026. This guide does not claim an independent in-game test.
- Nico Wiki: keycards and crates
Keycard, chip, crate and Desequencer values and descriptions.
- Nico Wiki: Underground Exchange
Command card and keycard-to-crate exchanges.