A California mental hospital where a psychiatric technician was strangled nearly two years ago is rolling out alarm-equipped lanyards.
But Napa State Hospital workers say the lanyards pose a risk of strangulation.
The new alarm devices going into service on Tuesday will be worn by workers in the area where criminal patients are held.
The Los Angeles Times says the devices transmit constant signals on the location of each employee and receive data so that workers can reach one another in emergencies.
The lanyard has a breakaway feature when there's 10 pounds of force.
But employees say a savvy attacker can still use the length of lanyard as a garrote.