Internet users have hesitated to pay for online purchases because of perceived security risks involved in providing credit card information. With mobile connections purchases could be added to the monthly phone bill , making the idea of ordering a pizza, paying for parking or booking a restaurant table on the phone more attractive. Wireless devices tend to have very little real estate available for viewing content - often as small as 14x7 characters. Wireless devices also tend to be black and white , so images don't render well. There are no mice and the keyboards are difficult to use.
Wireless devices tend to have limited CPU, memory, and battery life.
Developers and designers need to find new, intuitive navigational techniques to overcome these constraints. Today the most common navigational technique on wireless is the list with drill-down capabilities, like current mobile phone menus. The thought of experiencing the Web on a tiny screen , and of having to navigate or browse with tiny push buttons is a bit of a turn-off . Instead of simply dumping Web content into a horsepower-challenged device and expecting it to fly, the mobile has to be treated like a remote terminal that relies on a server to perform most of the computing. Some think it is Ok for your location to be disclosed when you ask for directions or phone Emergency, because you are giving your permission .