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CORNEJO, Michael John ENG'G2A MERRY, Riza Mae RED, Kimuel Entoma INTRODUCTION ''Electronics is a science about the devices and processes that use electromagnetic energy conversion to transfer, process, and store energy, signals and data in energy, control, and compu ter systems. This science pl ays an imp ort ant role in the world's pro gr ess. Implementation of electronic devices in various types of human activity largely contributes to the dev elo pment of complex scie ntif ic and tech nica l prob lems , prod ucti vity inc rease in physical and mental labor, and production of various forms of communications; television, radiol ocation, co mputer engineering, con tro l and ala rm systems, as well as wi reless technology, and others'' (Vodovozov, 2010, p. 8).  At our present time, this science had leveled up into a much more develop ed and much more beneficial for all the people living in a community that technology had already reached. The most influential and used nowadays, is the Wireless Communications. It is the transfer of information between two or more points that are not connected by an electrical conductor. The mos t common wireless technolo gies use electr omag neti c wireless telecommunications, such as radio.Some applications of radio wireless technology include

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CORNEJO, Michael John ENG'G2A

MERRY, Riza Mae

RED, Kimuel Entoma

INTRODUCTION

''Electronics is a science about the devices and processes that use electromagnetic

energy conversion to transfer, process, and store energy, signals and data in energy, control,

and computer systems. This science plays an important role in the world's progress.

Implementation of electronic devices in various types of human activity largely contributes to

the development of complex scientific and technical problems, productivity increase in

physical and mental labor, and production of various forms of communications; television,

radiolocation, computer engineering, control and alarm systems, as well as wireless

technology, and others'' (Vodovozov, 2010, p. 8).

 At our present time, this science had leveled up into a much more developed and

much more beneficial for all the people living in a community that technology had already

reached. The most influential and used nowadays, is the Wireless Communications. It is the

transfer of information between two or more points that are not connected by an electrical

conductor.

The most common wireless technologies use electromagnetic wireless

telecommunications, such as radio.Some applications of radio wireless technology include

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GPS units, wireless computer mice, keyboards, and headsets, headphones, radio, and

cordless telephones.

Wireless operations permit services, that are impossible to implement with the use of 

wires. One of the best-known examples of wireless technologiy is the mobile phone, also

known as a cellular phone, with more than 5 billion subscriptions worldwide as of the end of 

2012. These wireless phone, use radio waves to enable their users to make phone calls from

many locations worldwide. Some benefits of using wireless technology are: completes the

access technology portfolio, goes where cable and fiber cannot, involves reduced time to

revenue, and provides broadband access extension.

In our everyday developing technologies, we cannot avoid some people's attack

against us. Attackers like hackers and crackers, for the internet world, and holdapers and

thieves, for the physical world. These people that takes advantage of others, not only pose as

a threat in an individual's livelihood or work, but also in their lives. The increasing rate of 

criminality in our country is very alarming. Specially in the range of students and business

men and women, being the victims of this criminals. Prevention must be done to improve the

situation and to avoid another increase in the criminal reports. Starting in the school, Colegio

de San Juan de Letran, an experiment and a survey can be conducted with the Letran

Community to improve the prevention of losing gadgets or any techy things that they have.

Students, teachers, and faculty members of private schools and institutions are some of the

most common people being a victim of hold-up or snatchers, for we all know that, some

students going into this institution belongs to the upper class of the society and could easily

afford buying new gadgets and technologies. It is necessary to conduct this experiment to find

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a much better and preferable solution to prevent the lost of gadgets without the hope of being

recovered in time.

With a problem like this, usage of Alarm Systems and Devices is the first thing that

comes into mind of everyone. Usage of Alarm Systems to prevent crimes or accidents from

happening by the used of wireless technologies is now popular, specially to some individuals

that are busy. Some alarm systems serve a single purpose of burglary protection;

combination systems provide both fire and intrusion protection. Intrusion alarm systems may

also be combined with closed-circuit television surveillance systems to automatically record

the activities of intruders, and may interface to access control systems for electrically locked

doors. Systems range from small, self-contained noisemakers, to complicated, multi-area

systems with computer monitoring and control. Alarm systems give different kind of signals

about a problem or condition, it can be audible, visual or other form, to alert the victim and

catch the attention of the people in close range.

Dual signalling is a method of alarm transmission that uses a mobile phone network

and a telephone to transmit intruder, fire, and personal attack signals at high-speed from the

protected premises to an Alarm Receiving Centre (ARC). It most commonly uses GPRS or 

GSM, a high-speed signalling technology used to send and received 'packets' of data. A dual

signalling system would raise the alarm wirelessly via a radio path (GPRS/GSM) or cellular 

path using the phone line or broadband line as a back-up overcoming any compromise to the

phone line. Encoders can be programmed to indicate which specific sensor was triggered,

and monitors can show the physical location (or ''zone'') of the sensor on a list or even a map

of the protected premises which can make the resulting response more effective.

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In this present day, there are some applications a person can install in their gadgets to

help avoid accidents, like fire, storm, and even earthquake alarm systems is being invented

and can be installed in mobile phones. A simple tracking device can also be installed in a

gadget to enable the owner to retreived the gadgets if it was lost or stolen.Still, it is much

preferrable if a person can avoid things like this from happening, prevention is better than

cure, as some always say. It is better to prevent gadgets from being lost or stolen and to

catch criminals before they get away with their crime.