• PREETI VERMA
• PRITI SINGH
• NISHA CHARAYA

While robbery and burglary is one of the most widespread criminal phenomena, with a very high recidivism rate, it has rarely been the subject of thorough empirical research. Security is an important issues for all confidential areas. Confidentiality is very important in every area whether it is professional or personal. This paper presents the Security System based on Laser. It works on the principle of voltage divider circuit. When the laser beam continuously falls on the LDR, the voltage drop across it is very low as the resistance of LDR becomes less and as soon as the laser beam is interrupted by any means of object or a barrier, the voltage drop across it becomes high due to change in LDR’s resistance which traps the person inside by closing the main door of the confidential area.

Keywords: LDR, Laser

"LASER SECURITY SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.542-544, May-2018, Available :http://www.jetir.org/papers/JETIR1805511.pdf

"LASER SECURITY SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp542-544, May-2018, Available at : http://www.jetir.org/papers/JETIR1805511.pdf