Suitable Systems has released SeisMac, a new software tool that accesses your MacBook or MacBook Pro's Sudden Motion Sensor in order to display real-time, three-axis acceleration graphs. "While a number of products have been released that react to movement through use of Apple's Sudden Motion Sensor, SeisMac is the first to display hundreds of data points per second. SeisMac's resizable, real-time scrolling display shows an enormous amount of acceleration information. Place your laptop on a table and see the vibrations from tapping your toe on the floor. Lay your laptop on your chest and see your heartbeat. And of course, if there is a real earthquake, SeisMac will be displaying full seismic information while you drop, cover and hold-on." SeisMac has a range of plus or minus two gravities of acceleration, displaying 256 values per gravity, sampled two hundred times per second. SeisMac is also compatible with older Sudden Motion Sensor-equipped iBooks and PowerBooks. It is available for free for Mac OS X 10.4 or later.