U.S. Marshals Service - Thurgood Marshall Federal Judiciary Building

Submitted to:
U.S. Marshals Service
Thurgood Marshall Federal Judiciary Building

Submitted by:
www.TURNSTILES.us, Inc.
March 2026 – Current

The team at TURNSTILES.us is honored to provide our Turnstile and Access Control Solutions. Please find featured equipment information, photos, and project documentation below. We appreciate the opportunity to secure your facility.

We aim to develop a scalable security solution for Federal Court Buildings, with options based on security level, user experience, and cost.

Security Entry Solutions

Project Overview

This project includes security upgrades across multiple entry points within the building, including:

a. West Entrance (Atrium – Primary Public Entry)
b. South Entrance (Mass Ave – Limited / Potential Daily Use)
c. East Entrance (2nd St – Staff / Secondary Entry)
d. Interior Security Elements (elevator lobbies, controlled zones)

Each location has unique constraints related to:

Queueing and circulation
ADA accessibility
Screening equipment integration
Blast / ballistic considerations

See architectural scope > View PDF (Password Required) > pending

Security Tier Framework (By Technology Type)

The following tiers represent scalable security levels that can be applied across all entry points.

Tier 1 – Basic Control
Minimal optical sensors, cost-focused, small footprint, low glass, suitable for secondary entrances

Tier 2 – Balanced Security
Strong optical detection, great cost/performance, high OR low glass, primary entrances

Tier 3 – High Security
High-risk zones, advanced user position tracking, federal-grade control, primary entrances

Tier 3+ Maximum Security
High-risk zones, advanced tracking, federal-grade control, mantrap interlocking doors

Application by Area

Recommended Application by Area

West Entrance (Main Public) → Tier 2 or 3

South Entrance (Limited Use) → Tier 1 or 2

East Entrance (Staff Entry) → Tier 2 or 3

Interior Zones → Tier varies by security level

West Entrance (Atrium – Primary Public Entry)

Recommended: Tier 2 or Tier 3

Rationale:

High public traffic
Requires strong detection and throughput
Visible security presence

Suggested Technologies:

Optical gates
Barrier Partitions
Metal detection
X-Ray baggage screening

South Entrance (Mass Ave – VIP / Limited Use)

Recommended: Tier 1 or Tier 2

Rationale:

Lower traffic
Intermittent, potentially daily use
Cost-sensitive

Suggested Technologies:

Optical gates
Metal detection
X-Ray baggage screening

East Entrance (2nd St – Staff / Secondary Entry)

Recommended: Tier 2 or 3

Rationale:

Daily use, frequent use by staff
Requires security and flow in a limited space

Suggested Technologies:

Optical gates
Metal detection
X-Ray baggage screening

Interior Security Zones (Elevator Lobbies, Controlled Areas)

Recommended Tier: Tier varies

Rationale:

Depends on access level
Can require higher containment
Consider a uniform level as other tier selections

Suggested Technologies:

Optical gates
Partition barriers

Example Implementations (Digicon Platform)

Tier 1

Model: dTower
Positioning: Entry-level security with essential functionality

Key Features:

Basic sensor configuration
Controlled access with lower cost and smaller footprint
Suitable for lower-risk or secondary entry points
Limited advanced detection compared to higher tiers

Tier 2

Model: dGate
Positioning: Balanced solution (security and cost efficiency)

Key Features:

Increased detection capability
Improved user flow and reliability
For primary entrances
High Glass or Low Glass

Tier 3

Model: dFlow
Positioning: High level of security monitoring and control

Key Features:

Advanced tracking technology using a Time-Of-Flight (TOF) pedestrian Detection System that mounts on the ceiling above the turnstiles
Tailgating and intrusion prevention
Normally open OR normally closed operation
Wider passage sizes = fewer lanes needed = clean look
Can support mantrap configuration (dPass option)

Alternative Configurations and Enhancements

Tier 3+

The dPass Turnstile is a two-step validation system utilizing the same advanced tracking technology as the dFlow, configured as a mantrap for controlled, single-user access. It is commonly deployed in high-security environments such as airports, border control, and secure facility lobbies.

Tier 3+

A mantrap monitors and controls two interlocking doors that cannot be opened simultaneously. Either door can be unlocked and opened, as long as the other door is locked and closed. Between these interlocking doors is a small, secure space, which only admits one person at a time. Ideal for high-security areas.