Due to the resource limitation in smart tag, it is important to carefully adjust the strength of the security in way that provides reasonable protection while limiting overhead. In our suggested solution, several elliptic curve points ,as guardians to protect sensitive data, are preloaded in the memory of smart tags. More precisely, we pre-install 32 points in each table for < αu,βu,0,βu,1 > respectively. As result, we have also observed that the RAM usage elevated, while the number of points used increases. A more detailed observation on storage consumption will be explained in the experimental result section.