**Author details**

Lukas Vojtech, Robi Dahal, Demet Mercan and Marek Neruda

\*Address all correspondence to: lukas.vojtech@fel.cvut.cz

Department of Telecommunication Engineering, FEE, CTU in Prague, Prague, Czech Repub‐ lic

#### **References**


[3] Lozano-Nieto A. RFID Design Fundamental and Application. Boca Raton: CRC Press; 2011.

**8. Conclusion**

196 Radio Frequency Identification from System to Applications

packaging, etc.

**Acknowledgements**

**Author details**

lic

**References**

Sheet EM4222, 2003.

Implementation of textile antennas for RFID tags represents a realistic developmental assign‐ ment, and as shown and practically proved, this arrangement yields good results. The successful operation of such textile antennas mainly requires the mechanical stability of the textile composite, which realizes a RFID tag antenna. A good function of the antenna and thus the sensitivity of the complete tag can be provided for just compliance with the mechanical construction and stability of required dimensions. A good choice of textile material for both electrically conductive structures and the insulating layer of the resultant fabric composite is

Textile RFID tags find its use at both person marking (marking of athletes, protective clothing and other functional ready-made textile products) and stock-in-trade marking in hospitals,

This work was supported by the project Kompozitex FR– TI4/202 - Composite textile materials for humans and technology protection from the effects of electromagnetic and electrostatic fields. The work was conducted in the Department of Telecommunication Engineering at the Czech Technical University in Prague in the scope of thesis called "Design and performance analysis of purely textile antenna for wireless applications" [12] and other research projects.

Department of Telecommunication Engineering, FEE, CTU in Prague, Prague, Czech Repub‐

[1] Kennedy T.F. et al. Body-Worn E-Textile Antennas: The Good, the Low-Mass, and the Conformal, IEEE Transaction on Antennas and Propagation 2009; 57(4) 910-918.

[2] EM Microelectronic Data Manual, Marina SA. Company of the Swatch Group, Data

the most important prerequisite for the successful implementation.

Lukas Vojtech, Robi Dahal, Demet Mercan and Marek Neruda

\*Address all correspondence to: lukas.vojtech@fel.cvut.cz


**Chapter 10**

**Design and Implementation of**

Additional information is available at the end of the chapter

In the coming decades, an increasingly larger number of baby boomers will grow into old age. This trend has led to an increasing demand for devices and services (e.g., [1-8]) that can help elderly individuals to live well and independently. *Object locator* is such a device. The device can assist its users in finding misplaced household and personal objects in a home or office. Figure 1 shows several object locators offered today by specialty stores and websites. Each of these locators contains an interrogator with a few buttons and an equal number of tags: Even the largest one, the leftmost one in the figure, offers only 8 buttons. The buttons are of different colors, and there is a tag of the color matching the color of each button. By attaching a tag to an object to be tracked, the user can look for the object by pressing the button of matching color on the interrogator. The tag attached to the object beeps and flash‐ es in response and thus enables the user to find the object. Other locators work similarly.

> © 2013 Chou and Liu; licensee InTech. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

© 2013 Chou and Liu; licensee InTech. This is a paper distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

**RFID-Based Object Locators**

T. S. Chou and J. W. S. Liu

http://dx.doi.org/10.5772/53576

**1. Introduction**

**Figure 1.** Existing object locators

**Chapter 10**
