Best CAC Readers 2025

Find the perfect CAC card reader for your setup. Expert-tested recommendations for Windows, Mac, and mobile devices.

Top Rated CAC Readers

Updated November 2025 | As an Amazon Associate, we earn from qualifying purchases

#1 Best Overall
SCR3310v2 CAC Reader

SCR3310v2 USB Smart Card Reader

Windows Mac Linux
  • Most widely compatible CAC reader
  • Plug-and-play on all operating systems
  • TAA compliant for government use
  • Compact, portable design
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#2 Best for Mac
Identiv uTrust 2700 R Smart Card Reader

Identiv uTrust 2700 R

Mac Windows
  • Native macOS support - no drivers needed
  • Ultra-compact form factor
  • LED status indicator
  • Great for M1/M2/M3 Macs
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#3 Best USB-C
Identiv SCR3500 SmartFold USB-C Reader

Identiv uTrust 2700 R USB-C

USB-C Mac Windows
  • Native USB-C connection
  • No adapters or dongles needed
  • Perfect for modern MacBooks & laptops
  • CAC and PIV approved
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#4 Best Budget
HID OMNIKEY 3121 Smart Card Reader

HID OMNIKEY 3021

Windows Mac
  • Affordable entry-level option
  • Reliable performance
  • Durable construction
  • Good for occasional use
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#5 Best Mobile
SCR3310 Smart Card Reader

Identiv SCR3500 SmartFold

Mobile Windows Mac
  • Works with iOS and Android
  • Foldable, ultra-portable design
  • USB and Lightning compatible
  • Perfect for travel
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Quick Comparison

Reader Best For Windows Mac USB-C Mobile
SCR3310v2 Overall ✓ ✓ — —
uTrust 2700 Mac Users ✓ ✓ — —
uTrust 2700 R USB-C USB-C Laptops ✓ ✓ ✓ —
OMNIKEY 3021 Budget ✓ ✓ — —
SCR3500 Mobile/Travel ✓ ✓ — ✓

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