3 ms·these things? http://www.doublerobotics.com/ http://www.doublerobotics.com/by hobolord 11y agothese things? http://www.doublerobotics.com/ http://www.doublerobotics.com/solomatov 11y agoThis thing is quite hard to use. We had one in office but after some time everybody stopped using it.avr 11y agoInteresting - do you have any ideas why people stopped using them?