An incontinence detection system comprising an incontinence detection pad for placement beneath a person to be monitored, the incontinence detection pad including: an electrical sheet comprising a layer of material shaped generally as a rectangle having first and second long sides and first and second short sides, a radio frequency identification "RFID" tag coupled to the layer of material, the RFID tag being coupled closer to the first short side than the second short side, and a first electrode and a second electrode, the first and second electrodes (202, 204) provided on the layer and electrically coupled to the RFID tag, the first and second electrodes (202, 204) including a first electrode segment, a second electrode segment, a third electrode segment and a fourth electrode segment, the first, second, third and fourth electrode segments (220, 206, 226, 214) being generally parallel with the first and second long sides of the layer, the second and third electrode segments (206, 226) being situated between the first and fourth electrode segments, the second and third electrode segments (206, 226) being spaced apart by a first distance that is at least twice a second distance defined between the first and second electrode segments (220, 206) and between the third and fourth electrode segments (226, 214), the RFID tag configured to store an authentication code which is common to all incontinence detection pads that are authorized for use in the incontinence detection system, a reader having circuitry configured to store the authentication code also, and at least one antenna (13, 14, 15, 16) coupled to the reader, wherein the reader is configured to send a request to the RFID tag via the at least one antenna (13, 14, 15, 16) and to read via the at least one antenna data emitted from the RFID tag in response to the request, the reader is configured to confirm that the incontinence detection pad is an authorized incontinence detection pad by determining that the data received from the RFID tag includes the authentication code, wherein the reader is configured to transmit a message indicating that the authorized incontinence detection pad is wet if the data received from the RFID tag indicates that the incontinence detection pad is wet, wherein the reader does not transmit the message if the data does not include the authentication code. an electrical sheet comprising a layer of material shaped generally as a rectangle having first and second long sides and first and second short sides, a radio frequency identification "RFID" tag coupled to the layer of material, the RFID tag being coupled closer to the first short side than the second short side, and a first electrode and a second electrode, the first and second electrodes (202, 204) provided on the layer and electrically coupled to the RFID tag, the first and second electrodes (202, 204) including a first electrode segment, a second electrode segment, a third electrode segment and a fourth electrode segment, the first, second, third and fourth electrode segments (220, 206, 226, 214) being generally parallel with the first and second long sides of the layer, the second and third electrode segments (206, 226) being situated between the first and fourth electrode segments, the second and third electrode segments (206, 226) being spaced apart by a first distance that is at least twice a second distance defined between the first and second electrode segments (220, 206) and between the third and fourth electrode segments (226, 214), the RFID tag configured to store an authentication code which is common to all incontinence detection pads that are authorized for use in the incontinence detection system,