Patent ID: 7661217

Claim:
A method comprising: sensing movement of an existing non-shot-indicator of a handgun by providing an accessory on said handgun positioned to sense an element of the non-shot-indicator that protrudes externally from said handgun when said handgun is cocked or when a round is in a chamber of said handgun; and interpreting a sensed movement of the existing non-shot-indicator as sensed by said accessory as a shot fired from said handgun so that the sensed movement serves as a shot counter for said handgun, wherein said existing non-shot-indicator of the handgun comprises a round-in-the-chamber indicator or a striker status indicator, and wherein the sensed movement of said round-in-the-chamber indicator or of said striker status indicator is interpreted as a shot fired from said handgun, wherein said accessory comprises a capacitance sensor or an accelerometer.