Gaining entry to your premises can be enhanced by the introduction of various control units, which can be added after the initial gate automation installation. Keypads can be installed so that tradesmen can be given an entry code so they can access the premises when you are away. Intercom and video systems allow you to vet the person at the gate before allowing entry, these can also work over GSM so you can vet the person even when you are at work or on holiday without them knowing that you are not on the premises.