While iClass operates on the 13.56-MHz frequency like NFC, it often
uses the longer-range ISO/IEC 15693 contactless standard. Readers
operating under this so-called “vicinity-card” standard can reportedly
read cards up to 1 meter away or more. Payment and ticketing use the
shorter-range ISO/IEC 14443 standard, which forms the core of the
current NFC technology. IClass also can support 14443.

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