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Choosing the appropriate thickness for a proximity card is a seemingly simple yet crucial design decision. Thickness affects the card’s fit in a wallet, durability, personalization, and compatibility with readers and holders. A comparison is made between common thin cards (approximately 0.8–0.9 mm, similar to ISO CR80) and thicker cards (approximately 1.8 mm). This section […]
Antenna geometry, chip tuning, reader hardware, installation environment, card structure and wear, and system configuration all interact to determine whether a hotel key card can be reliably read at 1 cm or fails to read at nearly 7 cm. Based on these factors, we have compiled several key influences on the reading range to help […]