Alarms integrated through your home which will alert either a private security company, the police or yourself if an area is breached are one of the most effective measures of preventing theft or harm. These cameras and alarms will either scare the person with the use of a loud alarm sound on the premises, or potentially accompany this sound with a notification to some authority or service. Cameras can now notify you of movement and sound inside or outside your home through your phone in addition to notification of the police, but these measures are essentially put in place once a person has already entered, or is attempting to enter. The idea is to either scare them away with a fear of being caught, or get the police to the house fast enough to catch them in the act. The alarm system itself actually does nothing to make the break in more difficult, it only makes it more possible to catch the person who has broken in.
Prevention of access to the home is even more effective than an alarm system. Thieves want to act without being noticed, and as a result want to act as quickly as possible. By creating security measures that actually prevent access to the home, or slow it down considerably, you will prevent the person from ever getting inside in the first place, which is a line of defense that no alarm can promise. This is accomplished through the use of security gates and door, or security bars mounted over windows. These types of measures make it far more difficult for a person to enter a home, because the kicking in of a door or the breaking of a window is not enough to gain access. They will have to spend time and make noise actually cutting through or removing the security measures that have been attached to the house itself, and most criminals are not going to spend the time doing this as well as making noise during the attempt.
The best access prevention tools that can be used as part of your security system are iron security doors. These are typically seen in the form of ornamental iron combined with structural iron pieces welded together to form a barrier to entryways that is both beautiful and functional to prevent access to the home. A person would literally have to cut through iron bars in order to gain access, which is going to prevent nearly any person from making the attempt. When iron security doors are places over all entryways in the home, as well as iron security measures placed n windows and any other entryway, you will create a situation that makes it nearly impossible for anyone unauthorized to enter the residence. It is the kind of piece of mind that an alarm cannot provide. Yes, it is nice to know when someone has broken in, but wouldn't it be better to prevent the break in all together?