Faraday Bag, Shielded Box or Shielded Room?
Which stage and purpose the Faraday bag, shielded evidence box and shielded room each serve in protecting electronic evidence.
3 min readOctober 31, 2026
What Does Accreditation Prove?
ISO/IEC 17025 is the international standard showing that the tests and examinations a lab performs are technically competent, repeatable and traceable. In digital forensics, accreditation strengthens the reliability of findings presented in court.
The standard covers many topics, from staff competence to method validation. In this article we focus only on the infrastructure side: requirements related to the working environment and equipment.
Working Environment Requirements
The standard requires environmental conditions that could affect results to be identified, monitored and recorded. In mobile device examination, the most critical environmental condition is that the device doesn't connect to the outside world.
The strongest way to show this condition is met is for the examination area to be a measured shielded room. The room's test report can be presented to the assessor as objective evidence of the environmental condition.
Equipment and Records
A shielded room is treated like a piece of equipment: its performance must be verified at set intervals and the results recorded. That's why annual test reports and maintenance records matter.
Logging entries and exits, tracking how long devices stay in the room and reporting unusual events are also part of the chain of custody. These records can be kept with simple forms or lab management software.
What to Watch During Installation
The room's capacity should be set by the number of examiners working at once and the workload. The layout of areas such as the evidence store, examination area and entry vestibule directly affects the workflow and record keeping.
When we hand over the room, we provide the test report, material certificates and maintenance instructions you can use in the accreditation process. You'll find sample layouts for different lab sizes in our digital forensics solutions.
Frequently Asked Questions
Is a shielded room mandatory for accreditation?
The standard doesn't require a room directly; it requires you to prove the environmental condition affecting results is under control. A shielded room is the strongest way to do that.
How often should the test report be renewed?
Most labs prefer annual measurement. The interval is set by the lab's own risk assessment.
Can a room be added to an existing lab?
Yes. Thanks to the modular design, a room can be installed inside a working lab in a short time.
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