Tags come in a variety of sizes, memory capacities, temperature survivability and ranges.
Tags can be small enough to inject into animals or large enough to cover an entire desktop. Nearly all tags are encapsulated for durability against shock, chemicals, moisture and dirt. Passive Tags have zero maintenance requirements and virtually an unlimited life span. The life span of an Active Tag can be limited by the battery life, although some Tags offer replaceable batteries or extremely large capacity batteries. If the Label is involved in an open-loop system, it is affixed onto the product itself and is shipped throughout the complete supply chain.