**1. Introduction**

[16] Carles Musoll-Anguiano, Ignacio Llamas-Garro, Zabdiel Brito-Brito, Lluis Pradell, Alonso Corona-Chavez, "Fully Adaptable Bandstop Filter using Varactor Diodes", Microwave and Optical TechnologyLetters, Vol. 52, No. 3, March 2010, pp. 554-558.

300 Radio Frequency Identification from System to Applications

Considerable added value in wood and timber production can be achieved via higher yield and quality of the wood products deriving from improved control of the production proc‐ esses. The key to improve the production is the identification of the individual wood items in order to utilise exact information of their properties. This can be realized by marking and tracking of tree trunks, logs and sawn wood products to allow the information associated with them to be collected and utilised in all stages of the value chain from forest to the wood product.

Marking and traceability technology for forest industry have been investigated for some time and several technologies have been considered. Recently, UHF RFID technology tail‐ ored for the needs of the forest industry has been developed. This Chapter will discuss the unique challenges that the forest industry sets for the radio frequency identification technol‐ ogy and will highlight the benefits and possibilities of the RFID use. Recently developed technical solutions and their trials in production conditions are described.
