Hey guys,
recently i found this http://www.iskn.co/ its a magnetic tablet, you can put the rings on your pens and the tablet record the movement of your pen and translate it to digital programs. currently iam wondering is it really usefull? when i draw something digitally, i often use CTRL+Z to undo my strokes, this is not possible to, instead you have to add the ring on your eraser pen and erase then. the drawing would take much longer i suppose.
what do you think? is it really usefull? or just another useless thing?