The IB911 is a factory-encoded active tag that includes a lithium battery which enables it to provide hands-free functionality when it is used together with Cotag hands-free readers. For example, the combination of the IB911 tag and the HF500-Cotag reader results in a reading range of approximately 85 cm. The reading range when the IB911 is used in combination with Cotag proximity readers varies from approximately 9 to 25 cm. IB911 tags are particularly useful in environments where some cardholders are disabled or often have their hands full (i.e. a hospital or warehouse). One of the major advantages of Cotag technology is that active and passive cards can be mixed in the same system to provide ultimate convenience and cost-efficiency. Note: The card number is printed on the back of the tag. Quantity in order: 1