If it is an I-phone your fingers because the screen is calibrated to only react when you use your fingers I would recamend fingers but it really depends on the phone
No, because you don't need one. The iPhone is designed to work by touching with your fingers.
input
The stylus - is a pen-like object that's used to press 'virtual buttons' on the device's screen - or to input data. One example would be a parcel delivery driver. They would have the customer's details in their device - and the customer would use the stylus to 'sign' the screen, to confirm they've received their parcel.
No, if your screen is filled with fingerprints and grime, the best option would be to buy screen laminations to protect it or clean it with a soft piece of cloth. A pen is not really needed for this.
Technically speaking, it isn't any more of either than your finger is an input device, or your lips an output device. The screen that the stylus is used on is both an input or an output device, sensing pressure from the stylus and displaying images as a result.
no, unless you have sandpaper for fingers, the screen will show no signs of wear.
The DSi XL is much better because it is a newer Version and it's bigger. Actuelly it depends the DSi is smaller and more portable and th XL whont fit in your pocketAlso, the stylus for the DSi XL is the size of a real pen (hard to grip for younger kids) but there is no place to store it in the DSi XL, unlike the DS and the DSi. I would say the DSi XL is better for older people, older people need bigger speakers, a bigger stylus (the DSi stylus would be too small) and a bigger screen. I would also say that if you are 15 or over you should get an XL, if you are 14 or under you should get a DSi.
No, PDAs typically do not accept handwritten data on the screen as they do not have touch-sensitive displays. Handwritten data would need to be input using a stylus or a keyboard.
touchscreen
First, I would check the area between the screen and the controller and check for dirt or crumbs. Even the smallest grain can effect the function of the screen! If that doesn't work I would connect the Leapster 2 to the computer and re-calibrate the system through settings option!
i would think so because the screen is smaller therefore more pixels for the smaller screen so making the psp go better but i wouldn't go for one because they are nice and all but they are smaller so my fingers cant press the buttons easily and you cant put UMD disks into them
a stylus