Viper Car Alarms also makes a car alarm system that will announce to anyone who comes within a certain proximity to your car, "Protected by Viper. Stand back". This has been a feature in some of their alarms for many years. Many people associate this slogan with the Viper Car Alarm brand. A GSM car alarm will tell you to stand back befor you touch the car. That is so that you have warning before it goes off.