I. Overview of Common Proximity Card Types
• IC Card (13.56MHz)
• ID Card (125KHz)
• IC/ID Keychain Card
○ Functions as both a keychain and a chip-based proximity card.
○ Material: New and high-quality ABS material, waterproof with stable performance.
○ Swiping & Sensing Performance: High sensitivity, high frequency, fast reading speed, and sensing distance within 10 centimeters (varies by card reader).
○ Durability: Exquisitely crafted with new technology, wear-resistant, waterproof, and shatterproof.
○ Application Scenarios: High-end residential communities, underground parking lots, membership cards, campus pick-up/drop-off cards, classification cards, etc.
○ Core Advantage: Sensitive IC/ID sensing and easy operation.
○ Usage Notes:
▪ "Non-replicable": Requires authorization before use; designed for users with administrative rights to the card management system.
▪ "Replicable": For duplication purposes; requires professional copying equipment and correct model selection.
II. Detailed Specifications Table
|
Card Type |
Chip Name |
Frequency |
Rewritability |
Description |
|
IC Card (13.56MHz) |
UID Duplication Card |
13.56MHz |
Repeatedly Rewritable |
Cannot bypass firewalls; a classic duplication/magic card that supports repeated erasing and writing. |
|
CUID Duplication Card |
13.56MHz |
Repeatedly Rewritable |
Bypasses 90% of firewalls; recommended for elevator cards or scenarios where UID card duplication succeeds but swiping fails. |
|
|
FUID Duplication Card |
13.56MHz |
Write-Once Only |
Bypasses 95% of firewalls; suitable for cases where CUID card duplication succeeds but swiping fails. Locked after one-time writing; no repeated erasing/writing support. |
|
|
UFUID Duplication Card |
13.56MHz |
Write-Once (After Locking) |
Bypasses 95% of firewalls; same function as FUID cards but supports manual locking. Acts as a UID card (supports repeated rewriting) before locking; becomes non-rewritable once locked (can be regarded as a premium UID card). |
|
|
IC Authorization Card |
13.56MHz |
Non-Rewritable |
Bypasses 98% of firewalls; a standard card with a locked factory-set card number block (block 0) that cannot be duplicated. Only usable via authorization; commonly known as a "property management card." |
|
|
ID Card (125KHz) |
5200/5577 Duplication Card |
125KHz |
Rewritable |
Cannot bypass firewalls; a rewritable and duplicable ID card. |
|
8211/8268 Duplication Card |
125KHz |
Rewritable |
A 95% firewall-bypassing version of ID duplication cards; used when 5577 or 5200 card duplication succeeds but swiping fails. |
|
|
ID Authorization Card |
125KHz |
Non-Rewritable |
Bypasses 95% of firewalls; comes with a factory-fixed and locked ID card number. Cannot be duplicated; only usable via authorization; commonly known as an "ID authorization card." |



