Nowadays our life are connected to the world with or without our knowledge. In such world, we cannot afford to neglect the importance of logical security. The seven layers of network shall be carefully planned and properly secured. Here are the seven layers of network put into context for easy understanding: 1) Physical: such as the metal copper or optical fibre 2) Datalink: your network switch works in this layer. MAC (media access control) address works in this layer and al

Biometric can be any information that is contained in a natural body. We select the types of biometric that is unique to each person and can be easily presented for security purposes. Okay, that was a long way to saying things such as fingerprints, irises, veins, hand geometry, facial features, and the list goes on. Which biometric information shall we use and when shall we use it? That question has many answers, but here are some basic ideas based on our practical experience

Experience tells us that most access card technology cannot stay hack-proof for more than three years. However, that does not mean your three year old card would automatically become worthless. Even if a certain card technology is hacked in theory, but in practice, it may not be feasible to carry out the hacking. There are physical constraints such as distance from your card and hacking device portability. One thing for sure is: your card _is_ your key. Keep your card close t