Samurai Japan Relay Attack Prevention Key Case : Radio wave blocking technology
"Just pop your key in, and it's shielded." That's the simple promise of the Fogman Relay Attack Prevention Key Case. This little gadget tackles a modern menace: relay attacks, where thieves amplify your key fob's signal to unlock and start your car from a distance—no breaking in required. By blocking those sneaky radio waves, it keeps your vehicle secure even when your key is chilling on a table inside your house. Perfect for anyone with a keyless entry system, it's dead easy to use. Slip your key into the case, and it does the rest, cutting off external signals automatically. Beyond security, it offers peace of mind for daily life, whether you're parked on a busy street or overnight in your driveway. Built tough with durable materials, the set includes two cases—handy for multiple keys or sharing with the family. It's a smart, no-fuss upgrade to your anti-theft toolkit.
Features
- Anti-theft protection
- Set of two cases
- Smart key compatibility
- Compact and portable design
- Radio wave blocking technology
General specs
- Brand: Samurai Japan
- Model: Relay Attack Prevention Key Case
- Seller: Joom
- ID: 68a4e697cce08401022d047f
- Function: Radio wave blocking, Relay attack prevention
- Compatibility: Smart keys, Keyless entry systems
- Contents: Set of 2 cases
- First listed by seller: 8/24/25
If you are interested in more details, you can find full information on the seller's page.
View on seller's site
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$34.41
Last price update: 12/6/25
Out of stock
Price History for seller Joom
Shipping options
Delivery to 
United States
United States
Unavailable
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| Brand | Samurai Japan | Wsdcam | Mijia | Xiaomi | FORFEND Security | eMjollRay |
| Model | Relay Attack Prevention Key Case | 113dB Bike Alarm | FORFEND Smart Home Safe | EMJ-120CM-AC-2K | ||
| Color | ||||||
| Rating |
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| Price | $34.41 | $18.17 | $99.90 | $99.00 | $199.99 | $12.34 |
| Seller | Joom | Banggood | Gshopper | Gshopper | Amazon | Amazon |
| Update | December 6, 2025 | December 9, 2025 | July 25, 2024 | July 25, 2024 | December 6, 2025 | December 6, 2025 |
Relay Attack Prevention Key Case
$34.41
