RFID reading distance depends on several factors including:

    Size of the tag’s antenna

    Tag chip

    Tags orientation in the reader field

    Strength of the reader field

    Environmental factors like metal, water or other material around the tag

    LF, HF and UHF near-field tags typically have a reading distance of ~1 ft (30 cm).

    UHF far-field tags typically have a reading distance of several m/ft but are strongly dependent on the environment.

    NFC Tags (HF) are designed for near-field communication with a smartphone or similar device and typically have a reading distance of ~1 in (2 cm).