Apple's application with the U.S. Patent and Trademark Office describes a process for placinganorder and then notifying customers when anorder is ready to grab at a pick-up station.
The Web is fundamental to his business, says Arbiter, who notes that students might be writing an essay on one half of the computer screen and placinganorder on the other.
The best way to protect yourself is to use limit orders when placinganorder to buy or sell a stock or an exchange-traded fund. (See How Your Buy and Sell Orders Get Filled for more.) Look at the bid-ask spread and set your price limit at the bid for selling a stock and at the ask for buying a stock.