It is not possible to create a bitmask that can read the heat-stamped badge number for HID iClass credentials. The reason for this is that the HID iClass credential stores this badge value in the credential’s encrypted secure sector. This encrypted information can only be accessed by HID’s own hardware.

The ISONAS hardware can read the card serial number (CSN) from these credentials and generate a unique and secure value, but it will bear no relation to the credential’s heat-stamped number. Users who wish to use the HID iClass credential will need to enroll by presentation to add this style of credential.

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