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This book constitutes the thoroughly refereed post-conference proceedings of the 9th International Conference on Mobile Computing, Applications, and Services (MobiCASE 2015) held in Osaka, Japan, February 28 - March 2, 2018. The 10 full papers and 13 demo/ poster papers were carefully reviewed and selected from 35 submissions. The conference papers are covering intelligent caching; activity recognition and crowdsourcing; mobile frameworks; middleware; interactive applications; and mobility.

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Making Pier Data Broader and Deeper: PDR Challenge and Virtual Mapping Party.- DanceVibe: Assistive Dancing for the Hearing Impaired.- Quick Browsing of Shared Experience Videos Based on Conversational Field Detection.- Evaluating Mobile Music Experiences: Radio On-the-Go.- Smartphone-Based Estimation Of A User Being In Company Or Alone Based On Place, Time, And Activity.- GERMIC: Application of Gesture Recognition Model with Interactive Correction to Manual Grading Tasks.- SmokeSense: Online Activity Recognition Framework on Smartwatches.- Machine Learning of User Attentions in Sensor Data Visualization.- Measuring How We Play: Authenticating Users with Touchscreen Gameplay.- vStore: A Context-Aware Framework for MobileMicro-Storage at the Edge.- A System for Training Stuffed-Suits Posing without Suit Demo Papers.- An Eyeglass to Present Information to a User and Others Separately by LED Blinking.- Energy Harvesting Sensor Node toward Zero Energy In-Network Sensor Data Processing.- Gamification for High-quality Dataset in Mobile Activity Recognition.- Improving Ultrasound-based Gesture Recognition by Partially Shielded Microphone.- A Comparison Result between Garment-type and Bed-sheet-type Pressure Sensor for Pressure Ulcer Prevention.- Automatic Classification of Traffic Accident Using Velocity and Acceleration Data of Drive Recorder.- Dialogue Breakdown Detection with Long Short Term Memory.- Estimation of Person Existence in Room Using BLE Beacon and its Platform.- Evaluation of Priority Control Mechanism for Remote Monitoring IoT System in Greenhouses.- Lecturus: Collaborative Mobile Phone Lecture Recording.- On-Body Smartphone Position Detection with Sequence.- Correction Based on Hand Transitions.- Taxi Dash: Serendipitous Discovery of Taxi Carpool Riders.- User Attribute Classification Method based on Trajectory Patterns with Active Scanning Devices.

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