This book follows the design and implementation process of the Dynamic Time Warping Algorithm along with tests results described in graphs and statistics. ¿ What is Dynamic Time Warping Algorithm (DTW)? ¿ How Dynamic Time Warping works? ¿ How is Fast Dynamic Time Warping different from DTW? ¿ Open source code. ¿ Fast Dynamic Time Warping pseudo code. ¿ How we Implemented Fast Dynamic Time Warping on Mobiles ¿ Android sensors tested. ¿ Building the classification model. ¿ Results of tests conducted through: ¿ Graphs. ¿ Statistics. ¿ Final results and conclusion.