A free app for Android, by RaceChrono.

Photo Stopwatch is a simple, useful application for capturing images of runners at the finish line. The app allows you to use the phone’s camera to capture the finish line and then save the resulting image, along with the location and time, to your device.

It’s also possible to control the application using the phone’s built-in volume buttons, or by using the headset/button combo.

The resulting images can be saved to your device, shared via e-mail, or uploaded to a website. The Photo Stopwatch app also provides a useful way to view the photos you’ve captured, as well as a quick way to share them with your friends.