TK4100 LF card

ID card is an induction card based on low-frequency RFID (125KHz), with a unique fixed number built-in, only used for identity recognition, and cannot store or modify data.
Core Features：
Read only: The card number cannot be written or encrypted, and the data is publicly available.
Low cost: simple structure and low price.
Easy to copy: Low security, requires password or biometric authentication.
Common uses:
Basic identity recognition: company/school access control, attendance sign in.
Logistics tracking: cargo labeling, warehouse management.
Permission control: parking lot access, community access control.
Limitations:
Only supports simple authentication and cannot be used for payment or complex data management.
Weak security, easy to replicate, not suitable for high confidentiality scenarios.