The present invention is directed to a device, system, and associated method useful in alerting and warning an individual or another before the individual activates a weapon such as a gun, a Taser, or the like, by emitting a signal, which could be a vibration, noise, or other indicator to act as a message or to provide the individual with an opportunity to consider the consequences of activating the weapon. The signal may be activated when the weapon is removed or is being removed from a holster or other holding device. The removal of the weapon from the holding device may be detected by using magnets, switches, or another known method. The device may also be able to be turned off manually, such as if in a shooting range or in practice.