US Patent 9745782 Secure sealing device and method

The present invention concerns a secure sealing device 101 comprising at least a closure element 102 with an electrically conductive path 120, and a locking body 103 comprising an electric circuit with a data carrier and a radiofrequency transceiver with a predetermined working wavelength. Said locking body 103 is configured be locked to at least one free end 102a of said closure element 102 to attach the locking body 103 to an object to be sealed. The electrically conductive path 120 of the closure element 102 has a length which is substantially equal to X or ½X times half said predetermined working wavelength of the radiofrequency transceiver, thus enhancing the range of the radiofrequency transceiver by inductive coupling.