STEALTHAUTHENTIFICATION USING RANGE OF RADIO FREQUENCY TRANSPONDER IN THE ENDODONTIC SPACE

在牙髓腔内使用射频应答器进行隐形身份验证

• 批准号: 17310088
• 负责人: ISHIHATA Hiroshi
• 金额: $ 10.68万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17310088/
• 关键词: STEALTH; RFID; ENDODONTIC THERAPY; AUTHENTIFICATION; MOBILE PHONE; RADIO FREQUENCY; ISO 15693; SECURITY; ICタグ; 本人確認; 歯; 口腔; 生体埋め込み; 埋込み; ステルス認証; メンブレン; 再生医療; 生体親和性; セキュリティ; 非接触

INTRODUCTION: In recent years, automatic identification procedure (Auto-ID) has become very popular in many service industry, merchandise and distribution logistic, finance, transport and medical system. Auto-ID exists to provide information about people, animal, goods and procedure in transit. One of the technically optimal solutions of Auto-ID, using a silicon chip, has been provided as a technology of radio frequency identification (RFID). The most common form of electronic data-carrying-device in everyday life is a smart card based upon a contact field (phone card, bank card) on the data communication between host system and chip in housing of the card. Now an integrated design of contactless data transfer between the device and its reader is more flexible. In the ideal case, the power required to operate the electronic microchip in the card would also be transferred from the reader using contactless technology. This contactless system used for the transfer of power and data is cal … More led RFID. METHODS: Ten extracted human third molar teeth free from dental caries were used to encapsulate RFID transponders. Fifteen cylindrical transponders (o. d. 3 mm, length 13 mm) using a medium wave frequency (125 kHz Emfreccia ONMETALTM, Mitsubishi Materials, JAPAN) were tested. The endodontic cavity, including the coronal chamber and root canal of each tooth, was prepared to fit the cylindrical core of the RFID from the coronal side of the tooth. Volume expansion of cavity in the tooth and decrease of the dentin thickness might result in significant reduction of facility as a radio frequency shield. Dentin thickness of 3mm was preserved to allow functioning as a barrier for radio frequency between the transponder and the reader. Three acrylic cylinders (ψ10×22 mm) were used as controls in which co-axial holes (diameter: 3mm, depth: 13mm) were drilled to fit for the transponders. A reader (EmfrecciaTM, Mitsubishi Materials) that communicated with the transponder enclosed in dentin was located on the extension line of the tooth axis, because these tags had sharp directionality for communication with the reader along the cylindrical shaft direction. The tooth was held with a plastic clamp attached to a carriage in longitudinal axis direction. The maximum communication range was measured with establishment of the data transfer by a utility program for IBM-PC compatible via RS-232-C serial interface. RESULTS: The mean communication distance of unencapsulated RFID transponders was 18.6±1.7mm (n=15), while the mean ranges in RFID transponders encapsulated with acrylic materials (control) or teeth were 18.1±1.6 mm (n=45) and 17.8±1.7mm (n=150), respectively. The percentages of the range compared with the unencapsulated were 97.3±1.6% and 94.6±1.9%, respectively. No statistical significant difference under these conditions could be observed. The actual decrease of communication distance under dentin encapsulated conditions was very small (5.4%). DISCUSION: The RFID tag, holding ID information attached to the wristband, has already been carried out for a swift identification of inpatients. But continuous wearing of a wristband may induce physical and mental stress in some patients. The method embedding the RFID in the tooth might disengage the patients from the stress by the wristband. However, the contrivance to exclude psychological pressure on recipient in using the embedded RFID, such as placing the detector close to the embedded position in the human body, should be elaborated. Embedded ID into oral cavity could be apply to a mobile phone in combination with a RFID reader. This engineering system is called 'stealth identification' that utilizes communication equipment such as a mobile phone. In most of the voice communications, the distance between the face and the handset is relatively small. When the handset equips RFID reader, the identification can be established by detecting the RFID during the phone usage. It would be difficult to detect existence of the RFID transponder in the oral cavity. Furthermore, it seems almost impossible to distinguish voice communication from the identification process using the RFID in a tooth by the third party. The invisible method is relatively safe to hide the existence of imbedded RFID from malicious purpose. This contributes to the protection of individual privacy. The patient has little physical and mental restrain. CONCLUTION: The insulation effect of the tooth had small enough to allow for the penetration of the signal of the medium frequency band. Less

简介：近年来，自动识别程序（自动ID）在许多服务行业，商品和分销物流，金融，运输和医疗系统中变得非常流行。存在自动ID，以提供有关过境中人员，动物，商品和程序的信息。使用硅芯片的自动ID的技术最佳解决方案之一已作为射频识别技术（RFID）提供。日常生活中最常见的电子数据携带设备的形式是基于接触字段（电话卡，银行卡）在主机系统与芯片之间的数据通信中的智能卡。现在，设备及其读者之间的非接触性数据传输的集成设计更加灵活。在理想情况下，使用非接触式技术从读者转移了卡中电子微芯片所需的功率。用于传输功率和数据的非接触式系统是CAL…更多的LED RFID。方法：使用十个无牙龋齿的人类第三摩尔牙齿被用来封装RFID发音。测试了15个圆柱发音器（o。d。d。3mm，长度13毫米），使用中波频率（125 kHz Emfreccia onmetaltm，Mitsubishi材料，日本）。牙髓腔，包括每个牙齿的冠状腔和根管，准备从牙齿的冠状侧拟合RFID的圆柱芯。牙齿中腔体的体积膨胀和牙本质厚度的减小可能会导致设施作为射频屏蔽的大幅降低。保留了3mm的牙本质厚度，以允许发挥发夹和读者之间射频的障碍。将三个丙烯酸缸（ψ10×22 mm）用作对照组，其中钻了同轴孔（直径：3mm，深度：13mm），以适合于转接器。与牙本质中封闭的应答器通信的读取器（Emfrecciatm，三菱材料）位于牙齿轴的延伸线上，因为这些标签具有急剧的方向性，可沿圆柱形轴方向与读取器进行通信。牙齿用纵向轴方向固定在载体上的塑料夹。通过通过RS-232-C串行接口兼容的IBM-PC通过实用程序程序来建立数据传输来测量最大通信范围。结果：未封装的RFID传输的平均通信距离为18.6±1.7mm（n = 15），而用丙烯酸材料（对照）或牙齿封装的RFID传输中的平均范围为18.1±1.6mm（n = 45）和17.8±1.7mm（n = 150）。与未封装相比，该范围的百分比分别为97.3±1.6％和94.6±1.9％。在这些条件下没有统计显着差异。牙本质包裹条件下的通信距离的实际下降非常小（5.4％）。障碍：RFID标签持有腕带上的ID信息，已经进行了快速识别住院患者。但是，继续戴腕带可能会导致某些患者的身体和精神压力。将RFID嵌入牙齿中的方法可能会使患者脱离腕带的压力。但是，应阐述使用嵌入的RFID，例如将检测器放置在人体中嵌入的位置附近的探测器时，应排除受体的心理压力。可以将嵌入式ID与RFID读取器结合使用到手机中。该工程系统称为“隐身识别”，它利用通信设备（例如手机）。在大多数语音通信中，面部和手机之间的距离相对较小。当手机配备RFID读取器时，可以通过在电话使用过程中检测RFID来确定标识。很难检测到口腔中RFID应答器的存在。此外，第三方使用牙齿中的RFID将语音交流与识别过程区分开几乎是不可能的。隐形方法相对安全，可以将嵌入的RFID的存在隐藏起来。这有助于保护个人隐私。病人几乎没有身体和精神抑制。结论：牙齿的绝缘效应足够小，可以允许中频带信号的渗透。较少的

项目成果

Communication Range of Radio Frequency Transponder in the Endodontic Space

牙髓腔内射频应答器的通信范围

• 发表时间: 2006
• 作者: Ishihata H.;Shoji S.;Shimauchi H.
• 通讯作者: Shimauchi H.

A Radio Frequency Identification Implanted in a Tooth Can Communicate With the Outside World

植入牙齿的射频识别可以与外界沟通

• 发表时间: 2007
• 期刊: IEEE Transaction on Information Technology in Biomedicine 11
• 作者: Ishihata H.;Tomoe T.;Takei K.;Hirano T.;Yoshida K.;Shoji S.;Shimauchi H.;Horiuchi H.
• 通讯作者: Horiuchi H.

Communication Range of Radio Frequency Transponder in the Endodontic Space (No. 1081)

牙髓腔内射频应答器的通信范围（编号：1081）

• 发表时间: 2006
• 作者: Ishihata H.;Shoji S.;Shimauchi H.
• 通讯作者: Shimauchi H.

歯周組織内埋設型無線通信媒体

嵌入牙周组织的无线通信介质

• 发表时间: 2007

A Radio Frequency Identification Implanted in a Tooth can Communicate With the Outside World.

植入牙齿中的射频识别可以与外界通信。

• 发表时间: 2007
• 期刊: IEEE Transaction on Information Technology in Biomedicine 11
• 作者: H. Ishihata;T. Tomoe;K. Takei;T. Hirano;K. Yoshida;S. S hoji;H. Shimauchi;H. Horiuchi
• 通讯作者: H. Horiuchi