Total computer security

摘要

A security system for data entry using an input apparatus having a screen such as a cellular telephone or a computer. The input apparatus communicates with a remote computer and establishes a link therebetween. The remote computer determines positions of“keys”to be presented on the screen of the input apparatus for the user of the input apparatus. The positions are ideally determined anew each time the input apparatus and the remote computer interface with each other. These positions are communicated to the input apparatus. As the operator of the input apparatus choses a“key”, the coordinates (not the value of the“key”) of the selection are communicated to the remote computer which maps the coordinates to number values or characters for use in transacting a financial transaction.