Crime inhibits the development of a society. Preventive measures taken at the right time can prevent theft and burglary from victimizing civilians. This paper presents a simple, embedded, low cost solution to domestic security that is intuitive, economic and implementable. The proposed model incorporates two layers of security. One is biometric finger print recognition and the other is a password consisting of a preset number of pulsed vibrations that can only be felt. The key to strong security is established by random delays between successive vibrations. Successive authentications lack pattern, as they happen in random time, leaving observers clueless. We call this the Smart Key. The Smart Key does not require significant maintenance and is powered by its own embedded DC UPS. In this way, it removes any requirements such as an external UPS/Inverter which can be expensive. The data less design of Smart Keys make them universal and identical, which frees the user from any distress in case it is lost. The system design is very modular and welcomes expansion of functionality with ease. It has a regulated variable DC power supply port for additional peripherals, making it a stand-alone reliable security system.

Multipliers are the backbone of high-performance computing systems such as Microprocessors and Digital signal processors. Multipliers require more hardware resources and processing time, hence they are the slowest elements in the system. Multipliers are mainly used in today's high-end Digital Signal Processors and they occupy a larger chip area because of their inherent internal circuit complexity. Present-day co-processors are designed to support different size computations to achieve high performance. Researchers have worked on signed and complex number multipliers used in co-processors of 64 bit and below. There is a scope for designing a higher bit complex number multiplier to achieve higher performance. In this context, we proposed to design of 128-bit complex number multiplier of various architectures such as Booth Multiplier, Modified Booth Multiplier, Urdhva Multiplier and Nikhilam Multiplier using ModelSim SE 6.4 and Xilinx Vivado. In this work, various architectures such as Booth Multiplier, Modified Booth Multiplier, Urdhva Multiplier and Nikhilam Multiplier for 8-bit, 16-bit, 32-bit, 64-bit and 128-bit designed using Verilog for complex number multiplication. Nikhilam is one of the sutras of Vedic mathematics which is chosen for the implementation of complex number multiplier for area reduction. Synthesis reports are generated using the Xilinx Vivado tool for speed and power comparison. From the comparison, we have observed that Booth, Modified Booth, Urdhva, and Nikhilam occupy an area of 324.32%, 292.79%, 56.36%, and 46.70% respectively for 128-bit implementations. Among all the implemented methods, the Nikhilam method for complex number multiplier occupies very less area i.e. only 46.70% on-chip area.

This paper proposes the design and development of an embedded system with a robot for safety and security application using wifi communication and the webserver. This compact design has a robot along with various peripherals and sensors for detecting hazardous gas leakage and performs necessary control actions like an alarm for fire accidents, intruder detection, and sends alert messages to the local system. The robot can extinguish the fire and monitors the area inside the industry and passes the audio-video streaming to the local system. This robot also has a battery-powered wireless AV camera which provides robotic in-front environment information to the local and remote system and performs the audio and video streaming through a web server.

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Vehicle security is one of the major concerns that the entire world is currently experiencing. People generally own automobiles, yet these automobiles are not always secure. Vehicle theft occurs in parking lots, public places, and other unsafe areas. The vehicle’s manufacturer does not consider the vehicle security system to be a factor in the overall cost of the vehicle. Nowadays, only a few vehicles come equipped with high-priced security systems. Door locking, alarm system, GSM, GPS, and other security features are built into high-end vehicles only. There is a necessity to build a low-cost security system for vehicles that common people can afford it and the manufacture can built-in the security system in a wide range of automobiles. This paper proposed a method for vehicle theft detection, tracking, and accident identification using the Internet of Things.