The ISO card offers a low cost solution with all the benefits of KeyPAC technology. Each card is manufactured from white ABS plastic making it both strong and durable. It requires no batteries and offers a one billion code range. An ISO card can be placed into a specially designed card holder, attached to a clip or neck chain or it can be easily carried in a purse or wallet. It offers a lifetime guarantee against electronic failure. It only needs to be held near the reader and access is granted or denied within 0.5 of a second.