The first e-commerce service would be A)Banking. Hope this helps.
Before cellphones are able to be used to browse the internet, play games, record videos and take photos, its main purpose is similar to a telephone, albeit it is more portable. Early cellphones would not have games for you to play, not would it have emails for you to check, read, and reply to. Though ringtones might seem as an acceptable option, early cellphones would also have many selections or even any for you to choose.
Thus, the best option would be (B) contact list, which is necessary for a cellphone to have since the owner would need the number to be able to make a call.
Answer: Keyboard hardware & the operating system
Explanation:Keystroke loggers is also referred as the monitoring system which is a for the inspection of the every key pressed on an operating system. This technology monitors the activities of keypad devices such as smart phones etc. It is also used for the surveillance of the unauthorized activities that are done by the hackers or criminals.
Thus the correct option is keyboard hardware and the operating system is the location of the placement of the key loggers.