A card-based system electronically transfers funds in real time. In one embodiment, a control mechanism synchronizes modulation performed by microdisplays in a reflective Liquid Crystal On Silicon kernel with an electronically controlled shutter that alternately converts light output from the LCOS kernel between S and P polarizations. A listener component receives a notification in a network format suitable for transmitting the notification over a network. Similarly, the secure data assists the server in verifying that the request to access the server is not being made by a malicious third party. Abrasives are uniformly impregnated throughout the first and second member to sharpen the bottom surface of the cutting teeth. The method includes drawing an image of the elements on the display, the image having the visible relationship and modifying the image of one of the elements to represent a property of the element.