Wireless mouse on a laptop - there's the occasional mouse slip when you've moving a rook from one rank to another, but it's why I've reduced my board size to "Small" - I find I make more mistakes when I go smaller.
Can't play bullet effectively on the iPad - and definitely not on the iPad Mini; have to play 3|0 blitz, and even it's annoying when you start to run low on time. On the iPhone, it's even worse - best I can do there is 5|0 blitz, because the form factor means I've had to switch on the "Submit" button to prevent an incorrect move.
How you guys can play bullet games ? Are you using a regular mouse or some kind of special high tech laser device ? :-)
How often do you misplace pieces ?
thx.