Discovery
The Discovery screen is your card reconnaissance tool. It has three tabs: Detect, Collect, and Sniff.
Detect Tab
Section titled “Detect Tab”Quickly identify what type of card is on the reader.
Scan Modes
Section titled “Scan Modes”| Button | Description |
|---|---|
| LF | Scan for 125kHz low-frequency cards |
| HF | Scan for 13.56MHz high-frequency cards |
| All | Scan both LF and HF |
Supported LF Cards
Section titled “Supported LF Cards”- HID Prox (all Wiegand formats)
- AWID
- Indala
- EM4100
- Pyramid
- IO Prox
- Gallagher
- Securakey
- PAC/Stanley
- Nedap
- Nexwatch/Quadrakey
- G-Prox II
- Paradox
- Viking
- Keri
- Motorola
- COTAG
- IDTECK
- Jablotron
- Noralsy
- Presco
- Visa2000
- FDX-B (animal tags)
- Destron (animal tags)
Supported HF Cards
Section titled “Supported HF Cards”- iCLASS (Legacy, SE, SEOS)
- MIFARE Classic (1K, 4K, Mini)
- MIFARE Ultralight (C, EV1)
- MIFARE DESFire (EV1, EV2, EV3)
- EMV (payment cards)
- PIV (government ID)
Auto Key Extraction
Section titled “Auto Key Extraction”For iCLASS cards with standard keys, ATLAS automatically attempts credential extraction to get FC/CN.
Collect Tab
Section titled “Collect Tab”Continuous card collection for passive reconnaissance.
Watch Modes
Section titled “Watch Modes”| Mode | Description |
|---|---|
| HID Prox | Continuous LF read for HID cards |
| iCLASS | Continuous HF read for iCLASS |
| MIFARE | Continuous HF read for MIFARE |
| Paxton | Net2 protocol capture |
| EM4100 | EM tag continuous read |
How It Works
Section titled “How It Works”- Select a watch mode
- Tap Start
- Cards appear as they’re detected
- Duplicates are automatically filtered
- Tap Stop when done
Auto-Save
Section titled “Auto-Save”Enable Auto-Save to automatically save detected cards to the active project. Cards are tagged with:
- Detection timestamp
- GPS coordinates (if enabled)
- Active project association
Targeted Read
Section titled “Targeted Read”For specific card protocols, use Targeted Read:
- Select card type (iCLASS, SEOS, MIFARE, etc.)
- Single precise read instead of continuous scan
- Better for detailed card analysis
Sniff Tab
Section titled “Sniff Tab”Capture RF communication between a card and reader.
Supported Protocols
Section titled “Supported Protocols”| Protocol | Command |
|---|---|
| LF (All Types) | lf sniff |
| iCLASS | hf iclass sniff |
| MIFARE | hf 14a sniff |
| DESFire | hf mfdes sniff |
| ISO14443-B | hf 14b sniff |
| ISO15693 | hf 15 sniff |
| FeliCa | hf felica sniff |
| Topaz | hf topaz sniff |
| Legic | hf legic sniff |
Trigger Options
Section titled “Trigger Options”- Card Trigger — Capture when card approaches
- Reader Trigger — Capture reader-initiated comms
How to Sniff
Section titled “How to Sniff”- Select card type
- Enable desired triggers
- Tap Sniff
- Position Proxmark3 between the card and reader
- Badge or present a card normally
- Tap Stop when done
Trace Files
Section titled “Trace Files”Captured traffic is saved as .trace files that can be:
- Viewed in the Waveform Viewer
- Analyzed offline
- Shared for further research
Saving Cards
Section titled “Saving Cards”After detection, tap a card to:
- Save — Add to database with project/GPS
- Copy — Copy raw output to clipboard
- Load — Send to Cards screen for writing
- View Raw — See full Proxmark3 output