How to prevent the copy of access control card?

Access card, water card, elevator card on the replicator, just link the replicator to the computer, the mouse a little light, a few seconds later easily replicate the new clone access card, water card, elevator card, carrying a replica card can easily enter and exit the community access control, take the elevator, to the bathroom water bath.

This sounds incredible, but familiar to professional technicians.

News that access cards, water cards, and elevator cards are easy to duplicate has appeared in the headlines more than once and has caused a lot of uproar and angry condemnation of the practice. However, many people are often one of them. For example, they have many family members. The community provides a limited number of access cards and elevator cards, so they consider how to make a duplicate for their family. For example, to save money, many students find someone to duplicate their hot water cards.

It is well known that one person makes a profit and the other must pay. In this way, criminals use access control duplicate cards and elevator cards to enter and exit communities to steal, endangering the personal safety of residents. Some people specialize in stealing water cards and wasting water resources.

So, how should we prevent this fear and how can we ensure access control, elevator security and the proper use of water resources? 　

In fact, there is a spear and a shield. This problem can be solved from the technical level. There are currently three methods: 　　

Ⅰ can not directly use the UID of the drip card as the only identification number, should establish an independent logical number, and can encrypt the logical number.

ⅡAnti-copy access control and elevator controller can be set up. As long as the copied card system is read, it will automatically alarm, and at the same time close the elevator or pass the access control authority, so that the copied access card immediately becomes invalid. 　　

Ⅲ increase the security factor of the access card itself, using anti-copy, anti-decryption, anti-crack drip card or CPU from the source alone to copy, decrypt, crack the card!