How do private investigators do surveillance?

In order to perform efficient surveillance as part of their private surveillance work, private investigators employ a variety of techniques and strategies. To create a thorough surveillance plan, they start by gathering data and doing background research on the issue. Finding the subject's routines, known locations, and probable activities are necessary for this. Investigators use covert observation techniques, such as stakeouts, undercover work, and the use of cutting-edge surveillance equipment, during surveillance operations. They may follow the subject around with cameras, binoculars, GPS trackers, and other specialised equipment while recording any pertinent evidence.