I found that our homes nowadays are not secured anymore , as many friends of mine told me how thieves get on the flats of their neighbours and escape before getting caught . So I decided to make this project that helps to alert most of people near our homes in case there is a thief in there , by sending SMS to home owner and taking photo for the thief and posting it on facebook and also alert alarm is heard , all this is done using Arduino and 1Sheeld , let's know how it is made step by step .