Security System Based on Knock-Pattern Using Arduino and GSM Communication

With the constant progress in the technological world, concerns for safety also increase day by day. Protection like keys can be replicated quite easily. So, here is a smart security system with the use of 'Arduino' microcontroller, Piezo Electric and GSM Module. Here, the security system is based on a "secret knocking pattern" which can be installed to a ‘safe' or any other similar object which needs protection. The lock unlocks only when a certain secret knocking pattern is implemented and an SMS alert is sent if anyone tries to sneak into contents by knocking differently. This concept eliminates the fear of replication as there is no physical Unlocking Object to start with. Thus, the smart ‘Knock Based Security System' can be an added protection in our everyday lives. Arduino Uno board which act as a microcontroller unit. The Piezo sensor takes the knocking input and then passes it to the Arduino board where the input pattern is compared with the original Secret pattern. In case of wring pattern, the GSM sends an alert to the given Phone Number