A system is presented that enhances mail security and logistics. A further method is provided for diagnosing hepatocellular carcinoma by detecting GPC3 in a liver tissue sample. Then band values P11, P12 and P13 for a pre-leading-edge region, band values P21, P22 and P23 for a leading-edge region, band values P31, P32 and P33 for a pre-trailing-edge region, band values P41 and P42 for a trailing-edge region, and band values P51, P52 and P53 for a post-trailing-edge region are calculated from the tire vibration data. Between the banks BNKs, a green light emitting layer, a blue light emitting layer, and a red light emitting layer are provided.