Securus, Patents and the Question of Jail Surveillance

Securus filings describe advanced monitoring tools; the record still has to show whether, where, and against whom they were used.

2026-11-13 · Securus, Patents and the Question of Jail Surveillance · Criminals Behind The Badge

Securus, Patents and the Question of Jail Surveillance

What the patents describe:

Securus Technologies LLC and its subsidiaries serve correctional and law enforcement communities and create technology covering a variety of product areas. For over 20 years, the United States Patent and Trademark Office has issued several patents covering its technologies. One research summary describes a layered correctional technology network combining communications control, biometric identification, video monitoring, and GPS tracking.

Another patent imagined capturing the phone numbers of everyone a prisoner talks to, including friends and family, and using that information to scrutinize their e-commerce purchases. After EFF published its post on that patent, Securus told EFF that it will not build the system described in the patent.

The stakes inside the jail:

Securus operates in the correctional communications market, where phone calls, video visits, and messaging create sensitive data. Attorney-client communications, in particular, demand careful handling under law and policy. Debates about jail surveillance affect privacy, legal defense, and public trust.

What scrutiny requires:

Responsible scrutiny focuses on facts: the contract in place, the products deployed, the notices given to users, the legal authority claimed, and the logs showing what data was collected or accessed. Surveillance concerns are serious questions that require documentary and technical proof. The right response is neither dismissal nor speculation; it is evidence.

Voice data and patent fights:

GTL later claimed Securus violated a patent, and the two spent multiple years suing each other before reaching a confidential settlement in 2016. Since then, both have continued to file patents for voice-based security features, particularly those based on cross-referencing databases of voice samples with other information. One patent describes an automated system that detects where within each of two audio recordings an identical conversation segment begins and ends.

Securus also proposes that a gaming system can be used as a biometric surveillance device; according to one patent, “ the monitoring system may be configured to collect sensor information from the resident communications device in order to detect unsafe conditions during a gaming session.”

The court record:

Securus Technologies, Inc. brought a patent infringement action against Global TelLink Corporation, filed on 1 Dec 2014 in the United States District Court for the Northern District of Texas, case number 3:14-cv-04233. The case shows these filings are litigated property, not marketing copy. Many of the technologies are proprietary to Securus Technologies LLC.

What is not established:

Criminals Behind The Badge publishes this independently written article at a stable URL. It does not assert unverified use of any patented method in any particular case.

A patent can describe a method, but it cannot, on its own, establish that a facility used that method against a specific person. Capability is not the same as conduct.

A patent can describe a method, but it cannot, on its own, establish that a facility used that method against a specific person.

What the Record Shows:

The record shows patents and patent disputes describing communications control, biometric identification, video monitoring, GPS tracking, voice-sample cross-referencing, identical-segment detection, and sensor collection during gaming sessions. It also shows a 2016 confidential settlement between Securus and GTL and a 2014 Texas patent case, 3:14-cv-04233.

What it does not show is whether any facility deployed any patented method against any specific person, or whether attorney-client communications were handled with the care law and policy require. The open question is whether contracts, policies, audits, court orders, and technical records will confirm or refute the concern.