Android devices have a vibration sensor - accelerometer. It isasensitive sensor that reports the device vibrations. This toolispowerful vibration meter tool. It has the following features:-shows vibrations in real time - saves vibration data into SD card-provides configurable sound alarm that may be used to: - detecttheearthquakes when you sleep - detect if somebody opens the doorwhenyou sleep It is recommended to use the battery charger whenitworks for a long time. If you want to recommend the alarmfeaturethat may recognizeearthquakehttp://www.facebook.com/pages/Earthquake-Alarm/311308608954778Wewill also use this facebook page to keep you informed aboutthework progress and current activities and plans for the future.Thisapplication comes with ABSOLUTELY NO WARRANTY. Notice: There isaproblem that occurs on some devices. Some devices may notprovidethe data when from the vibration sensor when the screen isoff.This is an Android error. We are trying to find a goodworkaround.Send us the information if the application does notwork, pleaseVery deep technicalinformationhttp://code.google.com/p/android/issues/detail?id=3708