The system is composed of two major elements: the SecurID Card, which is a credit card-sized microprocessing unit that is ... operating, in both the SecurID Card and the ACM, which calculates numbers which change unpredictably, but not randomly, every 60 seconds. ... Periodically the activity log is downloaded, printed, and distributed to each usera#39;s manager for review of the card holdera#39;s activity.
|Title||:||Applications of computer card technology, 1990|
|Author||:||United States. Dept. of the Treasury. Financial Management Service|