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A packing material, a tag, a certificate, paper money, and securities, each of which can be surely prevented from counterfeiting or deception. A plurality of wireless tags used for an object such as a packing material, a tag, a certificate, paper money, or securities. The location of the plurality o

A packing material, a tag, a certificate, paper money, and securities, each of which can be surely prevented from counterfeiting or deception. A plurality of wireless tags used for an object such as a packing material, a tag, a certificate, paper money, or securities. The location of the plurality of wireless tags attached to each object is varied on the object such that the object can be identified. Then, the object using the wireless tags is identified by detecting the location of the plurality of wireless tags attached to each object. The more random the locations of the wireless tags, the more certain it becomes to identify the object and to prevent or detect the counterfeiting of the object or deception.

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What is claimed is: 1. A packing material comprising: a plurality of wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna; wherein the plurality of wireless chips is randomly dispersed over a surface of a base material or randomly embedded dispersed

What is claimed is: 1. A packing material comprising: a plurality of wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna; wherein the plurality of wireless chips is randomly dispersed over a surface of a base material or randomly embedded dispersedly in the base material. 2. A packing material according to claim 1, wherein the integrated circuit is formed by a thin film transistor. 3. A packing material according to claim 1, wherein the base material has flexibility. 4. A packing material according to claim 1, wherein the base material has paper or plastic. 5. A packing material according to claim 1, wherein the integrated circuit comprises: a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna; a demodulation circuit for forming a first signal by demodulating the alternating signal; a microprocessor for producing a second signal by arithmetic processing according to the first signal; a modulation circuit for modulating the second signal; and a switch for modulating a load on the antenna according to the second signal that is modulated. 6. A packing material according to claim 1, wherein the wireless chips have a memory. 7. A packing material according to claim 6, wherein the memory has a region for storing a password for restricting reading. 8. A tag comprising: a plurality of wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna; wherein the plurality of wireless chips is randomly dispersed over a surface of a base material or randomly embedded dispersedly in the base material. 9. A tag according to claim 8, wherein the integrated circuit is formed by a thin film transistor. 10. A tag according to claim 8, wherein the base material has flexibility. 11. A tag according to claim 8, wherein the base material has paper or plastic. 12. A tag according to claim 8, wherein the integrated circuit comprises: a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna; a demodulation circuit for forming a first signal by demodulating the alternating signal; a microprocessor for producing a second signal by arithmetic processing according to the first signal; a modulation circuit for modulating the second signal; and a switch for modulating a load on the antenna according to the second signal that is modulated. 13. A tag according to claim 8, wherein the wireless chips have a memory. 14. A tag according to claim 13, wherein the memory has a region for storing a password for restricting reading. 15. A certificate comprising: a plurality of wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna; wherein the plurality of wireless chips is randomly dispersed over a surface of a base material or randomly embedded dispersedly in the base material. 16. A certificate according to claim 15, wherein the integrated circuit is formed by a thin film transistor. 17. A certificate according to claim 15, wherein the base material has flexibility. 18. A certificate according to claim 15, wherein the base material has paper or plastic. 19. A certificate according to claim 15, wherein the integrated circuit comprises: a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna; a demodulation circuit for forming a first signal by demodulating the alternating signal; a microprocessor for producing a second signal by arithmetic processing according to the first signal; a modulation circuit for modulating the second signal; and a switch for modulating a load on the antenna according to the second signal that is modulated. 20. A certificate according to claim 15, wherein the wireless chips have a memory. 21. A certificate according to claim 20, wherein the memory has a region for storing a password for restricting reading. 22. Paper money comprising: a plurality of wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna; wherein the plurality of wireless chips is randomly dispersed over a surface of a base material or randomly embedded dispersedly in the base material. 23. Paper money according to claim 22, wherein the integrated circuit is formed by a thin film transistor. 24. Paper money according to claim 22, wherein the base material has flexibility. 25. Paper money according to claim 22, wherein the base material has paper or plastic. 26. Paper money according to claim 22, wherein the integrated circuit comprises: a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna; a demodulation circuit for forming a first signal by demodulating the alternating signal; a microprocessor for producing a second signal by arithmetic processing according to the first signal; a modulation circuit for modulating the second signal; and a switch for modulating a load on the antenna according to the second signal that is modulated. 27. Paper money according to claim 22, wherein the wireless chips have a memory. 28. Paper money according to claim 27, wherein the memory has a region for storing a password for restricting reading. 29. Securities comprising: a plurality of wireless chips, each having an antenna and an integrated circuit electrically connected to the antenna; wherein the plurality of wireless chips is randomly dispersed over a surface of a base material or randomly embedded dispersedly in the base material. 30. Securities according to claim 29, wherein the integrated circuit is formed by a thin film transistor. 31. Securities according to claim 29, wherein the base material has flexibility. 32. Securities according to claim 29, wherein the base material has paper or plastic. 33. Securities according to claim 29, wherein the integrated circuit comprises: a rectification circuit for producing direct current power supply voltage by using an alternating signal inputted from the antenna; a demodulation circuit for forming a first signal by demodulating the alternating signal; a microprocessor for producing a second signal by arithmetic processing according to the first signal; a modulation circuit for modulating the second signal; and a switch for modulating a load on the antenna according to the second signal that is modulated. 34. Securities according to any one of claims 29 to 33, wherein the wireless chips have a memory. 35. Securities according to claim 34, wherein the memory has a region for storing a password for restricting reading.