Method for field sobriety testing using a handheld computing device

A system, comprising:

• at least one processor;
• and
• a memory comprising program instructions, wherein the program instructions are executable by the at least one processor to:
• provide a visual target on a handheld computing device, wherein
• the visual target is provided during at least a portion of a gaze nystagmus test;
• and
• generate at least one test administrator signal from the handheld computing device, wherein
• the at least one test administrator signal provides an indication to the test administrator regarding movement of the handheld device during the gaze nystagmus test to assist in proper performance of the gaze nystagmus test.

A non-transitory computer-readable storage medium storing program instructions, wherein the program instructions are computer-executable to implement:

• providing a visual target on a handheld computing device, wherein
• the visual target is provided during at least a portion of a gaze nystagmus test;
• and
• generating at least one test administrator signal from the handheld computing device, wherein
• the at least one test administrator signal provides an indication to the test administrator regarding movement of the handheld device during the gaze nystagmus test to assist in proper performance of the gaze nystagmus test.