Four mm by means of 0.4 mm. Passive tags Epiclear Pro have a study distance that levels from 10mm to nearly 6 meters. Passive tags are inexpensive than active rfid tags and as a result are greater commercially to be had. Active rfid tags have a longer variety and large reminiscence potential than passive rfid tags and can therefore be able to save a considerably higher amount of facts. Active rfid tags may additionally have a battery lifestyles of up to 10 years.