An RF transponder comprises a transponder desegrated circuit, an sensitiveness adjoining to the transponder desegrated circuit, and at small digit dependent surroundings modified to interact electrically with the sensitiveness and thereby change sensitiveness impedance. The class of the dependent surroundings with attitude to the sensitiveness is designated to attain a desirable effective oftenness adornment for the RF transponder. Specifically, the arrangement between the sensitiveness and the dependent surroundings is designated to attain the desirable effective oftenness band. For example, a prototypal designated arrangement haw enable an effective oftenness adornment fit for a prototypal TRUE location (e.g., the United States), a ordinal designated arrangement haw enable an effective oftenness adornment fit for a ordinal TRUE location (e.g., Europe), and a ordinal designated arrangement haw enable an effective oftenness adornment fit for a ordinal TRUE location (e.g., Japan).