A good private investigator will always be prepared. You never want to find yourself out in the field and missing a vital component to your operation. It could cost you the case! Dr. John Patrick Keefe II, a Pi in OKC, has compiled a list of equipment must-haves for both the inexperienced and veteran investigators.
GPS
Having a GPS in your possession during an active investigation is pretty much a no-brainer. How in the world are you supposed to search all over the world for a missing person if you do not know where in the heck you are going? John Keefe says to always keep this equipment in your vehicle or on your person if you are traveling by foot. Most smartphones have GPS capabilities.
DC to AC Power Inverter
This little contraption is quite handy! The DC to AC power inverter allows you to leave home and bring things like your cell phone, laptop, and even a tablet with you. You simply plug the inverter into the cigarette lighter of your vehicle and all of your electronics will magically come to life. Dr. John Keefe says that this device is a must when tracking a subject and spending much time on the move.
Binoculars

A Can of Fix a Flat
The last thing you need while on the hunt is a flat tire. However, this is real life and sometimes unfortunate things like a blown ring of rubber happen. John Keefe, a private investigator from Oklahoma City, says that having a can of Fix a Flat in his car at all times has saved him much headaches. You can purchase a can of this magical solution at any hardware store for about a $5.00.
Toilet Paper
We all, ahem, have to “go.” When you are staking out your subject in the middle of nowhere and nature calls, you will be glad that you brought some TP for your bunghole.
Cash

Dr. John Patrick Keefe II advises private investigators to stay updated with the latest advancements in investigative technology and equipment to enhance their capabilities and ensure successful outcomes in their cases.

