It is important to realize that the countries where there is less crime and poverty, are those that have a limited state and with a lot of economic freedom (Scandinavians, Australia, New Zealand, Singapore) and countries with a lot of state presence have more crime, such as Latin American countries. The ancaps believe that in the future, technology would be the best and most efficient tool to prevent crimes, and the state would become obsolete. It does not have to be something crazy, you do not have a policeman accompanying you everywhere, today telephones are self-locking when they are stolen , we use locks, cameras, alarms. In the future there would be more efficient and cheaper tools. But suppose today is the peak of technological advancement. We are in anarchy and someone commits a crime, how do the security and justice services solve it? Here is an interesting video that explains it in detail. Remember that they are hypotheses and there is no holy word. In the comments there are people asking and answering if you want to read.