A wireless transmitter adapter (206, 406, 506, 606, 814) configured for a biosensor meter that determines a property of an analyte in a fluid, the wireless transmitter adapter comprising: a body (216, 416, 516, 616, 816); a connector (218, 418, 518, 618, 818) configured to be mechanically and electrically compatible with a communications port of a biosensor meter, wherein the connector (218, 418, 518, 618, 818) extends from the body (216, 416, 516, 616, 816) and comprises an arm (220, 420, 520, 620, 820); and wireless transmitter circuitry housed within the body (216, 416, 516, 616, 816) and electrically coupled to the connector (218, 418, 518, 618, 818), wherein data is receivable from the biosensor meter via the connector (218, 418, 518, 618, 818) and wherein the wireless transmitter circuitry is configured to wirelessly transmit the data receivable via the connector (218, 418, 518, 618, 818) from the biosensor meter; characterized in that: the body (216, 416, 516, 616, 816) is configured to surround at least a portion of a housing of the biosensor meter or to replace a battery cover of the biosensor meter; and (a) the arm (220, 420, 620, 820) comprises one of a slidable arm, a flexible arm (420, 820), or an elastomeric cord connector arm, wherein the arm (220, 420, 620, 820) is slidable or flexible relative to the body (216, 416, 616, 816) to allow the connector (218, 418, 618, 818) to be receivable in the communications port of the biosensor meter; or (b) the arm comprises a rigid arm, wherein the body is movable in a transverse direction relative to the biosensor meter to allow the connector to be receivable in the communications port of the biosensor meter. a body (216, 416, 516, 616, 816); a connector (218, 418, 518, 618, 818) configured to be mechanically and electrically compatible with a communications port of a biosensor meter, wherein the connector (218, 418, 518, 618, 818) extends from the body (216, 416, 516, 616, 816) and comprises an arm (220, 420, 520, 620, 820); and wireless transmitter circuitry housed within the body (216, 416, 516, 616, 816) and electrically coupled to the connector (218, 418, 518, 618, 818), wherein data is receivable from the biosensor meter via the connector (218, 418, 518, 618, 818) and wherein the wireless transmitter circuitry is configured to wirelessly transmit the data receivable via the connector (218, 418, 518, 618, 818) from the biosensor meter; characterized in that: the body (216, 416, 516, 616, 816) is configured to surround at least a portion of a housing of the biosensor meter or to replace a battery cover of the biosensor meter; and (a) the arm (220, 420, 620, 820) comprises one of a slidable arm, a flexible arm (420, 820), or an elastomeric cord connector arm, wherein the arm (220, 420, 620, 820) is slidable or flexible relative to the body (216, 416, 616, 816) to allow the connector (218, 418, 618, 818) to be receivable in the communications port of the biosensor meter; or (b) the arm comprises a rigid arm, wherein the body is movable in a transverse direction relative to the biosensor meter to allow the connector to be receivable in the communications port of the biosensor meter. the body (216, 416, 516, 616, 816) is configured to surround at least a portion of a housing of the biosensor meter or to replace a battery cover of the biosensor meter; and (a) the arm (220, 420, 620, 820) comprises one of a slidable arm, a flexible arm (420, 820), or an elastomeric cord connector arm, wherein the arm (220, 420, 620, 820) is slidable or flexible relative to the body (216, 416, 616, 816) to allow the connector (218, 418, 618, 818) to be receivable in the communications port of the biosensor meter; or (b) the arm comprises a rigid arm, wherein the body is movable in a transverse direction relative to the biosensor meter to allow the connector to be receivable in the communications port of the biosensor meter.