One bank offering this service is Mark Twain Bank. By sending them a check, the bank in turn will send you special software that will allow you to draw from your account with them to your hard drive. You may then use the funds to make purchases over the web. This type of payment system hopes to resolve the security problems related to the use of credit card numbers on the Internet. A common form of digital signatures are digital certificates, whereby the issuing company vouches for you and gives you a unique identification that can be verified by a merchant prior to accepting an order.
Advertising is sent via electronic mail and faxes.
Advertising is sent via fliers, letters, brochures, or reprints. Traditional forms of direct retailing have waned over the past decade or so, but Internet retailing stands to grow rapidly. This is a simple model that creates a web site to sell a narrow range of product's they do not manufacture directly to the consumer. One common example of dithering is when a color display is printed on a black and white printer. The printer uses tiny dots of black and white to simulate shades of gray that is in turn simulating the color display.