摘要 |
<p>The data carrier has a magnetic disk, universal serial bus stick, punched tape, read tape, compacts disks, video cassette recorder, digital video discs, electromagnetic chips, and is freely carried or is fixed on a body. The data carrier has personal data, personal identification characteristics and hardware devices. The electromagnetic-optic combinations, particularly electronic identity unit like passes or badges, particularly a credit card-like combined accessory with radio chips are used, and the data carrier fixed at body.</p> |