Use ancilla in a sentence. an aid for use as in understanding or accomplishing something; often, specif., a handbook, or manual. Origin of ancilla. see ancillary.
Making the world better, one answer at a time. The accelerometer in mobiles is used to measure the orientation or vertical and horizontal positioning of the phone. The most basic application of this is the device knowing when to alternate the view of the screen depending on how you are holding it.
Consumers who want to try a sleep tracker that can download data to computers or mobile devices have plenty of options. Among those that use accelerometers to track sleep and other health stats: â¢ Fitbit One: The device clips onto clothing during the day, goes on a wrist strap at night.