- Data security is an important task in today’s life. Data security can be done using GPS device. Among computer user mostly use data in electronic format. How to provide a security for data is important. In this paper, we propose a Location Based Data-Security System to secure data by applying Encryption-Algorithm and co-ordinate using GPS device. Encryption means of efficient secure integer comparison. The encryption technology cannot restrict the location of data decryption. In order to meet the demand of a location-dependent approach location-dependent data encryption algorithm is needed. A target latitude/longitude co-ordinate is determined firstly. The co-ordinate is incorporated with a random key for data encryption. The receiver can only decrypt the cipher text when the co-ordinate acquired from GPS receiver is matched with the target co-ordinate. GPS-based encryption is an innovative technique that uses GPS-technology to encode location information into the encryption keys to provide location based security. GPS-based encryption adds another layer of security on top of existing encryption methods by restricting the decryption of a message to a particular location. Our experimental results not only validate the effectiveness of our scheme, but also demonstrate that the proposed integer comparison scheme performs better than previous bitwise comparison scheme.