Professional undercounter lock systems showing secure compartments with combination locks and key access in a modern banking environment
Security Technology

Undercounter Lock Systems:Security Solutions for Teller Stations

Comprehensive overview of undercounter security systems and their role in modern banking operations. Learn about lock types, compliance requirements, and best practices.

Bob Exum
December 25, 2024
7 min read

In the fast-paced environment of modern banking, teller stations remain at the heart of customer interaction and daily cash handling. While vaults and ATMs tend to draw the most attention, the undercounter lock system plays a crucial role in maintaining security, controlling access, and protecting both staff and assets.

At Exum Services Inc., we specialise in the installation, maintenance, and upgrade of undercounter lock systems that meet today's highest security standards. In this guide, we break down the essential features, compliance considerations, and best practices for these often-overlooked but mission-critical components of physical bank security.

What Are Undercounter Lock Systems?

Secure compartments located beneath teller counters and in back-office cash handling stations

Undercounter lock systems are secure compartments located beneath teller counters and in back-office cash handling stations. These compartments come in various configurations, including drawer vaults, locking cabinets, and cash lockers, and are equipped with advanced locking mechanisms to prevent unauthorised access.

Used to Store:

Cash drawers
Coin trays
Important documents
Checks, receipts, and sensitive customer materials

Why Teller Lock Security Matters

Teller stations are high-traffic, high-exposure zones. Without proper protection, they become easy targets for:

Opportunistic theft during peak hours
Insider threats or unauthorised access
Robberies and duress events

An effective undercounter lock system provides rapid access for authorised users while safeguarding cash and documents when the teller steps away — especially during shift changes, customer disputes, or emergency situations.

Types of Undercounter Locking Mechanisms

At Exum Services Inc., we offer a wide range of lock configurations based on the institution's operational and risk profile

Keyed Locks

Simple, reliable, and cost-effective — best for low-risk environments with minimal turnover.

Key Features:

Traditional key access
Cost-effective solution
Reliable operation
Low maintenance

Combination & Dual-Control

Ideal for higher-security stations or shared access areas. Require two methods of authentication.

Key Features:

Dual authentication
Enhanced security
Shared access control
No key management

Electronic Locks

Programmable access with time restrictions and user tracking. Recommended for audit trails.

Key Features:

Audit trail capability
Time restrictions
User tracking
Programmable access

Biometric Access

Fast, touch-based access via fingerprint or secure swipe card — ensures only assigned personnel gain entry.

Key Features:

Biometric authentication
Fast access
No keys or codes
Personnel-specific access

Compliance Considerations for Teller Lock Systems

Undercounter lock systems must support FDIC physical security program requirements under 12 CFR Part 326

FDIC Requirements Include:

Controlled access to currency
Dual-control protocols in certain scenarios
Tamper-evident construction
Records of access and service history

Our certified solutions help ensure your teller stations are audit-ready and insurance-compliant.

Exum Services Compliance Support

We work closely with banks and credit unions to ensure their physical security setups not only deter threats but meet or exceed FDIC expectations.

Audit-ready documentation packages
Compliance assessment and gap analysis
Certified installation and maintenance
Ongoing regulatory support and updates

Best Practices for Installation and Use

Here's what we recommend to ensure your undercounter locking system serves you effectively

Customise Configuration Per Station

Tailor the layout based on the teller's daily workflow, left/right hand orientation, and storage needs.

Use Color-Coded or Numbered Keys

Helps prevent cross-use and ensures quick identification in multi-lock setups.

Train Staff on Access Protocols

Ensure tellers are trained to lock compartments whenever unattended — even briefly.

Integrate with Alarm Systems

Some advanced locks can connect to panic buttons or time-delay triggers during robbery attempts.

Schedule Regular Maintenance

Locks should be inspected quarterly for wear, battery power, and misalignment.

Upgrade Your Security with Exum Services Inc.

Whether you're equipping a new branch or modernising outdated teller lines, we provide expert consultation, tailored installations, and long-term service plans

Accessibility

Quick and easy access for authorized personnel during daily operations

Accountability

Comprehensive audit trails and access logging for compliance requirements

Defence

Advanced security features to protect assets and deter unauthorized access

We help institutions strike the perfect balance between accessibility, accountability, and defence — empowering your staff while protecting your assets.

Looking to Upgrade Your Teller Station Security?

Contact Exum Services Inc. today to schedule an assessment and explore our full range of undercounter lock solutions.