In this seminar, a simple magnetic sensing system will be presented for the detection of electric vehicle (EV), to enable wireless charging, as it travels along the inductive power transfer (IPT) highway. Typically, when a primary coil buried under the highway has sufficient coupling with the secondary coil mounted on the vehicle it is energized to initiate IPT. In the proposed scheme, a detection coil is wound around the outer boundary of the secondary coil and it is energized at 400 kHz. The magnetic field pattern generated by this coil is observed using tunnelling magnetoresistance (TMR) sensors arranged close to the primary coil. The TMR sensors are placed over the leading and trailing edges (in the direction of EV travel) of the primary coil. From the leading edge TMR sensor outputs, the energization point of that primary coil to begin IPT is automatically decided. Similarly, from the trailing edge TMR sensor outputs, the de-energization point to stop IPT from that primary coil is decided. Also, the effective area of overlap between the coils due to lateral misalignment is estimated. This enables the driver in correcting the lateral misalignment so that efficient charging is possible from the subsequent primary pads. A laboratory scale prototype was built and was tested to validate the proposed sensing system under different practical conditions. The results obtained prove the usefulness of the scheme.