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Flexible location-aware API developed for MEMs-equipped Android devices

11 Jan 2012

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CSR plc has developed the SiRFstudio Client LoCoMo API, which gives developers tools to add location and context-awareness of pedestrian motion on any MEMS-enabled Android device. LoCoMo API innovations are based on the concept of "locomotion" allowing the differentiation between various modes of physical movement, such as walking and running. These capabilities can distinguish applications in gaming and physical fitness. The LoCoMo API Software Developer Kit (SDK) comes with a fitness applet called "GoRun" to illustrate LoCoMo API capabilities.

Says Ashu Pande, general manager and managing director, Infrastructure and Services Business Unit (ISBU) of CSR "Developers of games increasingly demand a means of incentivising physical activity with virtual rewards, and fitness application developers would like applications that can sense motion, and classify and quantify physical activity throughout the day—not just during exercise routines."

LoCoMo API offers alternative location determination by providing Cell ID/Wi-Fi positioning when GPS is unavailable by utilizing its cloud hosted Cell/Wi-Fi Access Point Position Database and motion (i.e. device heading, pitch, and roll) sensing. The LoCoMo API's "Locomotion Context" capability is a significant advance over existing mobile phone pedometer APIs that require developers to assume a static human stride length. This approach creates significant error in the calculation of distance travelled, calories burned and other related values.

In contrast, the LoCoMo API automatically recognizes if the user is walking, fast walking, jogging, running, ascending/descending floors via stairs or elevator/escalator, and varies stride appropriately. The LoCoMo API uses the gait context information, which can change constantly during the course of an exercise routine, to provide accurate calculation of distance travelled and calories burned. In addition, automatic classification of physical activity simplifies application user interface by reducing the need to manually identify user activity.




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