The best license plate hide-a-key option in this group is the License Plate Safe Store LPS001, which replaces a license plate frame with a locked storage compartment. For a simpler under-car setup, choose a magnetic key box; the first option below also offers a combination lock and two mounting methods. Compare the mounting style, locking method, and available fit information before choosing, since a magnetic box and a license plate frame serve different needs.
| Product | Best For | Storage Style |
|---|---|---|
| License Plate Safe Store LPS001 | License-plate-mounted storage | Locked frame compartment |
| Magnetic Lock Box with 3 N52 Magnets | Flexible mounting | Magnetic box with combination lock |
| Waterproof Magnetic Key Holder | Basic under-car storage | Magnetic key case |
| Magnetic Key Box, Hide a Key Outside | Simple magnetic placement | Magnetic key box |
| Triple-Magnet Key Box | Weather exposure | Magnetic box with three magnets |
License Plate Safe Store LPS001
Best for: Drivers who specifically want a license plate-mounted hide-a-key compartment rather than a box attached underneath the vehicle. The product is designed to fit standard front or rear license plate mounting locations and has a four-digit combination lock.
The steel, powder-coated frame is designed to resemble a license plate frame while providing locked storage for keys or other small valuables. Its features also identify contactless car sharing as a use case. A Faraday bag is included, according to the product name.
Limitation: Fit is not universal. Some pickups may have limited rear clearance, while certain Tesla, Audi, and European vehicles require a universal mounting bracket that is not included. Check the vehicle-specific mounting notes before buying.
Magnetic Lock Box with 3 N52 Magnets
Best for: Buyers who want a lockable magnetic key box with an alternate hanging option. The product includes a removable shackle for hanging or attaching under a vehicle, plus three N52 magnets intended to hold the box to a flat metal surface.
Its four-digit combination is resettable, and the listing states that it has more than 10,000 possible combinations. Choose this if you want a code-secured container and the flexibility to use a shackle instead of relying only on magnetic mounting.
Limitation: The listing says full magnetic adhesion requires a flat surface. Confirm that the intended mounting spot is ferrous, flat, and clear of moving or hot components; the provided features do not establish fit for every vehicle.
Waterproof Magnetic Key Holder
Best for: Buyers looking for an outside magnetic key case for under-car or travel use. The product name describes it as a waterproof car key case with strong magnets, intended for spare-key storage outdoors.
This is a simpler alternative to the license plate frame safe when the priority is a magnetic holder rather than integrated, lockable plate-frame storage. Choose it if the intended location has a suitable metal surface and the product’s case dimensions work for the key you need to store.
Limitation: The supplied product information does not specify a combination lock, magnet count, or detailed vehicle-fit guidance. Review the listing for those details if a lock or a particular mounting surface is essential.
Magnetic Key Box for Outdoor Use
Best for: Shoppers comparing basic magnetic key boxes for under-car or outdoor placement. Its name identifies it as a magnetic key holder designed to hide a key outside, making it a straightforward category match.
Choose this if you want a compact magnetic-style storage approach and do not need the specific license plate-frame installation of the LPS001. The listing details supplied here do not establish a lock type or weather rating, so verify those points before relying on it for exposed storage.
Limitation: Magnet strength, dimensions, and water protection are not described in the provided product features. Avoid assuming those specifications without checking the current listing.
Triple-Magnet Key Box for Vehicles
Best for: Drivers seeking a magnetic box with stated weather protection and three magnets. The product listing describes a triple-magnet hold for ferrous surfaces, a waterproof and weatherproof design, and an ABS plastic body.
This option is better suited to buyers who prioritize outdoor exposure and a three-magnet attachment over license-plate-frame integration. The listing identifies cars, trucks, SUVs, and RVs as intended uses, with under-car storage as a central application.
Limitation: The supplied features do not mention a combination lock. If controlled access is important, compare it with a lockable option and confirm how the box closes before buying.
Buying Guide: How to Choose a License Plate Hide-A-Key
Do you want a license plate frame or an under-car box?
A license plate safe stores a key in a compartment integrated with the plate frame. It can offer a more built-in appearance, but vehicle mounting clearance matters. A magnetic box is usually the more flexible style, but it depends on finding a suitable metal surface and placing it where it will not interfere with vehicle parts.
Should the key holder have a lock?
For controlled access, prioritize a product that clearly states its locking method. The LPS001 lists a four-digit combination lock, and the first magnetic box lists a resettable four-digit code. Do not assume that a magnetic holder is lockable unless its listing confirms it.
What should you check before mounting it?
- Confirm the vehicle has enough front or rear plate clearance for a frame-mounted safe.
- For magnetic boxes, look for a flat, ferrous surface and follow the product’s mounting directions.
- Check the holder’s dimensions against the key or fob you plan to store.
- Consider weather protection when the holder will be exposed to rain, snow, or road debris.
- Place the holder away from moving, hot, or safety-critical vehicle components.
A hidden spare key can improve access during a lockout, but it also creates a security risk if the location is easy to discover. Choose a discreet placement, limit who knows where it is, and avoid storing identifying information with the key.
Frequently Asked Questions
Is a license plate safe the same as a magnetic key box?
No. A license plate safe mounts as a plate frame and stores items in a built-in compartment. A magnetic key box attaches to a suitable metal surface, often underneath a vehicle.
Will a license plate hide-a-key fit every car?
No. The LPS001 listing describes standard plate mounting locations but notes clearance limitations for some vehicles and the need for an additional bracket on certain makes.
Can a magnetic key holder attach to any part of a car?
No. Magnetic holders need a compatible ferrous surface. Check for a flat mounting area and avoid locations near moving or hot parts.
What is the most important feature for outdoor key storage?
Check the stated weather protection, closure or lock, and mounting method. The supplied product information specifically describes waterproof and weatherproof construction for the triple-magnet key box.
Is it safe to hide a spare key on a vehicle?
It can be convenient, but no hidden location is guaranteed secure. Use a lockable container when appropriate, choose a discreet location, and consider whether someone else could easily find it.