A soft key is a button, locate alongside a display device, which performs a function dependent on the text shown near it at that moment on the display. Soft keys are generally found on cellular phones, Automated Teller Machines, Primary Flight and Multi-Function Displays, although they are also found elsewhere. Hard key is the contrary term, which means a hard-coded key such as a number key pad or the Send/End key of a mobile phone. Depending on the development company, soft keys are often called F1(Left),F2(Right).