Abstract: The various embodiments herein provide an intelligent protective casing for smart devices. The casing comprises a frame to releasably engage and hold a tablet device. The frame comprises an opening provided on the center for exposing a display panel of the tablet device, a printed circuit board (PCB), a microcontroller embedded in the PCB and a hardware circuitry interface for providing functional compatibility between the tablet device and the frame. The hardware circuitry includes a plurality of user configurable hardware features which are enabled according to user preferences. The user configurable hardware features comprises a fingerprint scanner, a thermal printer, one or more smart card readers, a magnetic swipe card reader, high amplitude speakers, a barcode scanner, an iris scanner, a projector, a solar panel, a back ground noise cancellation circuit, one or more noise cancellation microphones and at least one swappable battery to drive the circuitry.