Taser, concerned for liability issues for police officers [note not for the company..] is recommending officers avoid the chest area;
Taser International advised them to stop aiming at the chest because of a slight risk of cardiac arrest when the electrified darts hit there.
The company has advised the police to instead aim for the belly or the back of the legs.
Taser International has always assured police officers that the stun gun can never cause problems with the heart, no matter how many times it is used on someone.
This is apparently resulting in some officers leaving the weapon in their lockers. We can only hope this is the beginning of the end of these devices.