TK4100 RFID Cards: LF, HF & UHF Guide
Choosing the right RFID card or tag comes down to a three-way trade-off: read range versus security versus cost. Low-frequency (LF) 125 kHz cards — including the ultra-economical TK4100 blank card — dominate legacy access control with short-range, low-cost operation but offer minimal security. High-frequency (HF) 13.56 MHz cards add memory and cryptographic protections for payments, transit, and modern access. Ultra-high-frequency (UHF) 865–867 MHz tags deliver meter-level read ranges for vehicle identification and supply chain applications but require careful handling during printing. This guide combines all three frequency types, examines the TK4100 as the budget LF standard, and provides practical printing and selection guidance.
Read More