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“Functional Requirement defines a function of software system and how the system must behave when presented with specific inputs or conditions

“Functional Requirement defines a function of software system and how the system must behave when presented with specific inputs or conditions. These may include calculations, data manipulation and processing and other specific functionality. The functional requirements of the project are one of the most important aspects in terms of entire mechanism of modules”

“The functional requirements here are:”
• “The user lift the phone and with the help of accelerometer detect the x, y & z coordinate”
• “It uses k-means clustering algorithm to analysis the process of partitioning a set of data objects (or observations) into subsets”
• “It uses Hidden Markov Model to train a user’s figure gesture and handholding pattern”
• “It dynamically authenticate the legitimate user of the device and distinguish the user from other unauthorized users”