Tiny Audio Recorder
According to PI Mall, this is the world's smallest high-grade audio recorder. Despite its size, it features high-quality sound and sensitivity for listening to conversations.
A high-resolution, mini camera stick. In addition to their use by investigators, Joe Seanor of PI Mall says devices like this are often purchased by people to spy on babysitters.
The iTrail is the world's smallest GPS data logger. PI Mall advertises the device, saying "Simply place the small iTrail unit wherever you like; your car, child's backpack, virtually anywhere!
Micro Bionic Super Ear
The bionic ear allows you to secretly hear from great distances. Its mini size, light weight and skin tone color allows for the wearer to hear from great distances without anyone even knowing you're wearing it.
Wire Frame Surveillance Sunglasses
These glasses keep the glare out of the eyes but also contain mirrors on the inside corners so you can see behind you.
This Pen recorder gives you the ability to audio record while you are taking notes, writing out a statement or record while the working pen is in your pocket.
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Also see the Investigator's toolkit column for strategies and advice from corporate investigations manager Brandon Gregg