DoorJammer DJ3 Portable Door Lock Brace

Last updated date: November 30, 2020

DWYM Score

7.8

DoorJammer DJ3 Portable Door Lock Brace

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We looked at the top Portable Locks and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Portable Lock you should buy.

Editor's Note November 30, 2020:
Checkout The Best Portable Door Lock for a detailed review of all the top portable locks.

Overall Take

Supplement any lock with this security device, which slides under the bottom of your door to keep it from opening. It works with all types of flooring, including carpeting, tile and laminate wood. The device needs only 0.3 inches of clearance and will even work with doors that have higher thresholds.


In our analysis, the DoorJammer DoorJammer DJ3 Portable Door Lock Brace placed 7th when we looked at the top 7 products in the category. For the full ranking, see below.

From The Manufacturer

STRONG AND POWERFUL - Our latest updated version of the DoorJammer is now constructed of rugged steel for increased strength. ENJOY PERSONAL SECURITY no matter where you are. Measuring 4.75 inches H x 2.75 inches W and weighing 8 oz, the portable DoorJammer door barricade keeps you safe at home, at the office, at school and on vacation. COMPATIBLE with all types of flooring, the innovative system of hinges and angles anchor the DoorJammer firmly to carpeted, tiled and laminate floors when outside pressure is exerted on the door. TAKES ONLY SECONDS to install and remove. No tools are required to implement this revolutionary home security device. In case of emergency, you can easily remove the DoorJammer with an upward motion. ADJUSTABLE neoprene extension foot needs only 0.3-inch of clearance, and can be used with doors that have high thresholds. Sleep tight in your dorm or hotel room, and protect yourself at work or school.

Overall Product Rankings

An Overview On Portable Locks

If you’ve ever worried about the strength of the locks in your hotel room, you know the benefits a travel lock can bring. In fact, with more people staying in vacation rental homes than ever, portable security locks have gained attention in recent years. You don’t know who has access to your vacation home when you’re staying there, so an extra lock can provide protection against previous guests who still have the keycode.

A secondary lock should be small enough to slide into the pocket of a purse or suitcase without weighing you down or getting in the way. But it should also be sturdy enough to provide the security you need, use after use. Hopefully, you’ll never have to test its strength in a real break-in situation, but you’ll want the security of knowing it will work if necessary.

For best results, look at the materials used to put the security device together. It should be made of heavy-duty materials like steel. Any secondary pieces should easily hold up. Some security locks are built to slide over the strike plate, while others are more of a doorstop, sliding under the bottom of the door to keep it from budging.

With the type of lock that fits over the strike plate, the key is to fit over the existing setup without damaging it. These devices can vary in how they work, but usually, you can put them in place in a matter of seconds. You may need to follow the instructions the first couple of times but once you get the hang of it, you’ll find it’s easy.

Before you buy a portable door lock, check the door specifications. Many of them only work with a door that opens inward. These locks are designed for hinged doors, too. If you have a sliding door, you’ll need a different kind of security lock.

The Portable Lock Buying Guide

  • If you’re buying a portable door lock for use in vacation homes and hotel rooms, make sure the design won’t damage the door.
  • Although you can easily tuck your portable door lock into a pocket, having a storage pouch can be useful. If your lock doesn’t come with one, consider purchasing one separately.
  • With some portable door locks, the red handle is everything. This is the piece that blocks the door when someone tries to open it. Look for a handle that’s thick and solid and can withstand great force.
  • Some portable door locks come with a built-in alarm. If someone tries to open the door, the alarm makes an ear-piercing noise. It’s not connected to emergency personnel, but it could be enough to scare someone away.
  • Before you slide the lock into place, look carefully at any instructions. Some will let you test it before you install it.
  • You may want to test the lock to make sure it’s secure after it’s installed. Have someone stand outside the door and try to open it.
  • Although portable door locks are great for traveling, if you’re looking for something for a longer-term residence, like an apartment or dorm room, it might be worth investing in a deadbolt lock. If one isn’t provided, check with your landlord or dorm advisor to ask if it’s okay to install such a thing.
  • How the device behaves when it’s removed is important, as well. You’ll want a lock that doesn’t break into multiple pieces as soon as you extract it from the door.
  • For hotel rooms, doorstop-style locks work well. They can handle a wide range of door stops and will easily store in your luggage or carry-on bag.
  • Try to avoid leaving valuables in your rental house or hotel room when you’re out. You won’t have your extra security lock to protect everything. You may want to use the hotel room’s safe or bring your own if you’re staying in a rental house.