Mobile Surveillance, also known as Physical Surveillance is the professional watching and/or following of someone (the “Subject”) to document and record the Subject’s whereabouts, actions, behavior, and other information of interest to the client.  Surveillance is lawful when it is conducted in public places where the Subject has no expectation of privacy.

Nolan Enterprises uses seasoned corporate investigators who are familiar with private-sector limitations for surveillance and ensuring that our footage is admissible as evidence.

Surveillance is now often assisted by technology, such as binoculars, cameras, and other recording devices.  This greatly assists in capturing “the shot” our client needs, but it also opens up a host of questions regarding the legality of the captured footage.  Several factors must be considered, such as trespassing, audio recording/wiretapping, and the Subject’s expectation of privacy.  In essence, only use competent, licensed investigators to ensure the footage was captured in lawful manner that can withstand 3rd party scrutiny.

  • Hidden cameras
  • Mounted Cameras
  • Key chain cameras
  • Camera/GPS monitoring for fleet vehicles
  • Dash cams

Contact us for immediate deployment of our Surveillance team members.

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Is surveillance in public legal?

These devices are used to observe customers, employees, and guests in places where there is no reasonable expectation of privacy.   Recording in restrooms, locker rooms and anywhere with an expectation of privacy is illegal.  Audio recording of conversations is also illegal, as consent is required in California to record someone’s voice.

What are modern uses of surveillance?

  • Surveillance is used extensively in custody cases, as it can confirm a parent’s behavior and activities.
  • Surveillance is often used in Sub Rosa investigations by insurance carriers to prove a fraudulent workers compensation claim.
  • Surveillance often used by banks and trust officers to locate heirs and missing persons.
  • Surveillance is often used in Executive Protection cases to track Persons of Interest.
  • Surveillance is often used to track assets and prove employment for marital dissolution cases, conflict of interest cases, and fraud/embezzlement cases.


Federal law 18 U.S. Code 2511 – Interception and disclosure of wire, oral, or electronic communications prohibited

California law Invasion of Privacy