If a tag is used for book tracking in libraries, the paper or plastic is used and for harsh environment the material will be different, RFID tag uses difference area has difference frequency.While choosing an RFID tag the first requirement is frequency. The frequency of the tags should be matched with the corresponding RFID reader for the proper functioning. Every RFID system works on particular frequency band of low frequency (LF), high frequency (HF), ultra-high frequency (UHF) or microwave frequency. In general, with the increase in frequency range, the reading distance and rate of data processing also increase.
For the reliable functioning it is important to deploy a tag according to its environment conditions. The housing material used for construction of tags depends upon an application. If a tag is used for book tracking in libraries, the paper or plastic is used and for harsh environment the material will be different. Under the various environmental conditions such as temperature, humidity, chemical impact, sand, water, dirt etc., a tag requires the suitable IP rates for protection. For indoor applications the IP65 or less are suitable and while selecting a tag for outdoor applications the IP67 or above is best.