Rishon Enterprises Inc. Addalock The Original Portable Door Lock by (1 Piece), for Home Security, Apartment Security Lock, Travel Door Lock, AirBNB Lock and Dorm Room Essentials

This is supposedly the original Original portable door lock, not an imitation.It is a nice touch it comes with an Addalock nice pouch too. I am glad I bought two.

Excellent...but dependent on the door. Has worked well for me.

Will not allow all but the tiniest of door locks to click back into place (and share) original door frame retainer. Hotel door locks are by nature substantially larger. May have to adapt this to simply hook as opposed to it taking up all of recess which currently prohibits door clicking closed into (and sharing) same retainer. OR is it designed to replace the actual/hindered door lock and become the only thing holding it shut?LATEST: HAVE BEEN USING IT SUCCESSFULLY IN UK TRAVELODGE HOTELS. IT WORKS!!! ADDITIONALLY THE HOTEL DOOR LOCK IS ABLE TO LOCK WITH IT IN PLACE. VERY STURDY LITTLE THING AND UNLATCHED BY SIMPLY PULLING UPWARDS ON RED PLASTIC HANDLE. FEEL SAFE KNOWING ITS THERE.

If you used this in an hotel and were taken ill no one would be able to open the door to help you. Not good.

This is an excellent quality product. I tested it today and it works great! I would bot hesitate to buy another one which I will do for another door.I’ll be using these on vacation and on some of my home doors when I am away.This product comes in a case and with installation instructions.

La cerradura portatil viene con un estuche practico para llevar cuando viajas, como ventaja principal es la seguridad en la puerta, Lo recomiendo por su practicidad y calidad

I tried it immediately on my door, it was very easy to setup.

Perfect for hotels!

I live in an apartment and work from home some days. One day I was on a conference call when I heard a knock at the door. The man behind the door shouted "maintenance," but he literally gave me 10 seconds to get to the door before he just started unlocking it. The landlord didn't provide me any warning that maintenance would be installing new air filters that day. After that incident, I knew I needed some sort of lock.I narrowed down my options between the Addalock and a security bar. The reviews for security bars are mixed: the success or failure highly depends on finding the right angle and using the bar on the correct flooring. Also, while one of the more inexpensive security bars on Amazon is cheaper than Addalock, the better-reviewed ones are more expensive.I could not figure out how Addalock worked from the pictures. My brain just wasn't putting it together. So I searched "Addalock" on YouTube and there were several videos, including one from a home shopping network, that demonstrated it. If you are like me and the pictures aren't doing it for you, I highly suggest you watch one of the Addalock videos.As others have said here, this works best if you have a quarter's width between the door and the jam. I didn't have a quarter, so I used 2 and then 3 credit cards. I had ample space, so I ordered it.My front door has a dead bolt and a doorknob lock, but my doorknob lock hasn't worked since I moved in. The doorknob locks, as in the knob won't turn when the lock is engaged, but the latch doesn't catch in the strike for some reason. Maybe it's not long enough to extend into the strike. So right now I am using my regular dead bolt and the Addalock on the broken doorknob lock. I also tried installing it on the dead bolt, but my dead bolt could not push all the way through the Addalock plate into the strike. The Addalock still WORKED, of course, and no one would be able to get in, key or not, but it just seemed like more security against intruders to use the dead bolt and the Addalock on the lock that's broken. If I am trying to keep out unexpected landlord visits, though, then it wouldn't matter where I installed it because no one with a key could get into the apartment.When I first used Addalock, the door didn't open fully, but I could get it open a tiny crack. I realized that I wasn't properly lining up the stainless steel part that inserts into the strike. Take the time to push that plate into the strike of your door jam and then slowly close your door. After that, I couldn't move the door *at all*.I am so thrilled to have this portable lock that I can attach and remove whenever I please and one that won't violate the terms of my lease agreement. It's VERY easy to use, but it's just not intuitive from the instructions for some reason, at least for me. I am a spatial learner, so the videos and getting my hands on the Addalock helped. I was able to install it in under 10 seconds and remove it in under 10 seconds the first time I tried it.*EDIT: (10/15/2015)Maintenance decided to make yet another surprise visit without warning. As it turns out, he read the apartment number incorrectly.This time, unlike last time, I had the Addalock engaged. He could not open the door. He tried multiple times. I even heard him banging his shoulder into it. This lock really does work. I was able to answer the door on my own time rather than just have a maintenance man barge in on me in the middle of the day. If you're a renter with an inconsiderate or incompetent landlord, I highly recommend you purchase one of these for all your doors.