The main role of a private detective is to follow people, monitor their activities and find proofs against them and in favor of their clients. Detectives do this using their knowledge and experience, but things have changed in the past few decades. New technologies have ushered and helped detectives solve cases in a lot more convenient way. GPS tracking has played a big role in assisting detectives with their cases.
Back in the day, detectives used to implement traditional ways of tracking, which were good but took a lot of time. However, with the arrival of GPS tracking, things have changed. Now, detectives can use GPS devices on the subject that they want details and check his/her activity without actually following him/her. This allows them to do a lot of other tasks while keeping track of the subject.
I can cite many examples of the use of GPS tracking for detectives, but there is one I would like to mention, i.e., identifying an employee who has been given the task to go to a certain place, but he/she instead of going to that place is going somewhere else. So, this can be confirmed by GPS tracking. If you want to spy on one of your employees, then you should hire a detective who makes use of advanced GPS tracking system. If you reside in Jakarta, then you can look for the best 'private detective service' (which is known as 'jasa detektif swasta Jakarta in the Indonesian language) by searching on the internet. Search with this particular phrase and you will be able to find the best detective for sure.