The Galaxy Note has an additional layer in its screen, tuned to sense special, sharp-pointed pens through magnetism.
The Note is not the first iPad competitor to work with a stylus.
The HTC Flyer came out last year with the same ability, but several missteps limited its appeal. First, it was half the size of the iPad yet cost just as much, and that was without the pen. Second, there was no slot for the pen in the body of the tablet, making it easy to lose. The pen also was expensive, costing $80 to replace.
Samsung then built pen-sensitivity into the first Galaxy Note, a smartphone launched early this year. Though well-received, the tablet had an odd size, with a 5-inch screen. That makes it very big for smartphone but small for a tablet. With the Galaxy Note 10.1, Samsung is taking the pen squarely into iPad territory.
So what can you do with the pen? Well, this is where the Samsung offensive starts faltering. There just isn't that much the pen is useful for, because stylus-equipped tablets are so new.
You can jot down notes, or edit photos in an included version of Photoshop. You can scrawl personal notes to people and email them. Instead of using the on-screen keyboard, you can use handwriting and let the tablet interpret it. You can even enter Web addresses this way. Handwriting is slower than typing, and the tablet's interpretation introduces errors, so it's not clear why you'd use it much, though.