Faraday bags are designed to block electromagnetic signals for various practical reasons, including:
- Security: To prevent hacking, tracking, or data theft by blocking external signals.
- Privacy: To protect sensitive information or prevent eavesdropping.
- Evidence Protection: Used by law enforcement to preserve digital evidence on confiscated devices.
- Signal Interruption: To stop unwanted notifications, reduce distractions, or test devices in isolation.
- Health Concerns: Some people use them to reduce exposure to electromagnetic fields.
