The emerging build-in sensing techniques create opportunities for Human-Computer Interaction capability of the mobile devices. This investigation explores novel build-in sensing techniques and relevant computation intensive algorithms to enhance the operational efficiency and usability of mobile applications. A case study on mobile application authentication involving touch screen manual input, camera barcode scanning, NFC recognition is implement-ed. Qualitative and quantitative evaluations on usability, efficiency, stability, and accuracy of user operation are examined on mainstream mobile platforms. Result illustrates the advantage of the proposed scheme and verifies the feasibility to enhance user-mobile interaction with mobile sensing techniques.
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