specification how to perform the tasks depicted in fig5 at point coordinator 201 alone or in combination with performing the tasks at station 202 i at task 501 in some embodiments station 202 1 receives a data payload from host computer 203 i in other embodiments station 202 1 itself generates the data payload it will be clear to those skilled in the art how to generate a data payload for a particular application at task 502 station 202 1 generates a first frame comprising the data payload and an acknowledgement frame in some embodiments the first frame also comprises a poll e g when the station generating the frame is a point coordinator etc the acknowledgement is intended as a response to a second frame that is yet to be received by station 202 1 at task 503 in some embodiments station 202 1 encrypts at least one bit of the first frame before receiving the second frame in other embodiments station 202 1 processes one or more bits of the first frame in a way other than encrypting such as coding the bits compressing the bits filtering the bits performing an application specific operation on the bits etc in still other embodiments station 202 1 does not perform any additional processing on the.