It's been a few times that I read that on helpful item for personal security is a door stopper which stops people from crashing through a hotel room door. I know this is not a concern in all places but for when it is, what kind of door stopper is effective and light enough not to be cumbersome?

A quick search on Amazon reveals quite a few things called door stoppers and not all of them seem suitable for keeping a door closed while others require installation, which is obviously not suitable for hotel stays.

  • 7
    I've always understood a "doorstop" to be a simple device, usually rubber, which can be wedged into a door to prevent it from closing. However, some googling does turn up a number of "Door Stop Alarms", which, while sharing the same small wedge form factor, seem to be designed for the explicit purpose of security in an environment like a hotel room. See this blog post, for one example. Commented Dec 15, 2013 at 18:27

4 Answers 4


A door stop alarm is in fact a good precaution against unwanted intruders (in case that you are traveling, NOT for home) and I do not share the pessimism of the other answers because there are several good reasons for using it.

The intruder causes the alarm for a reason: He wants to intrude while you asleep. In sleep, you are helpless and immobile. A thief can easily steal something, a robber or worse can easily overpower you. Even if you wake up ("Hmm, whats going on ?") you are disoriented, you need several seconds to clean your mind and understand the situation. Even then if you understand that someone is in your room, most people cannot act in full defense because they are under shock. In fact, robbers use exactly a blitz attack on the victim because they know this.

It does not matter that the door stop cannot hold out for long, this is not the purpose of the device. It matters that really every second gives YOU an advantage and the INTRUDER a disadvantage.

Advantage for you: Every second wakes you more up. Your body is alerted and ready for fight/flight. You can easily see in the dark, the intruder not (in case the floor is lighted). The deafening sound masks what are you doing. And very important: You can move. You can throw yourself against the door, barricade it, search your pepper spray or flee through the window if necessary (ok, not on the 3rd floor).

Disadvantage for the intruder: He was prepared to follow his plan. The alarm and resistance will surprise him, give you precious seconds because he needs to adapt his plan (In reality, thieves will almost always give up at that point and run). He cannot see you, he does not know what are you doing and where you are. Attention is raised, he takes the risk that every moment he will be witnessed or attacked.

There are really only two reasons for the intruder to continue after raising the alarm: a) He/She knows that noone will be alerted (no persons or persons too far away) or that noone cares (fear, bad neighborhood, being a despised person, violent country) and b) that they use violence to get what they want.

In the majority of cases it is not fulfilled because thievery/burglary is much more common than robbery/assault and therefore using the door stop is preferable. Even in the robbery case you have a possible option of escape through the window. I agree that an armed robbery without escape possibility only leaves the option to give up your possessions as fast as possible. But this is really the rarest case.

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    Why not just lock the door? Solves all your points and saves carrying a useless object.
    – S..
    Commented Jan 20, 2014 at 14:32
  • @Sam: No, it does not. Most hotel locks especially in third world countries can be easily picked or opened. Mind you, every lock costs you money, so hotels use cheap and/or widely available locks. Sometimes the door has no separate lock bolt, but only a safety catch which can be very easily defeated. It does also not prevent thievery from hotel personnel or using duplicate/stolen keys. Commented Jan 30, 2014 at 12:01
  • I've used a lock blocker in developing countries (where the lock permitted it), but that was for when I'd left the room. I can't imagine not being woken up by somebody entering the room when I'm in it, do you recommend that's a risk I should take seriously?
    – S..
    Commented Jan 30, 2014 at 12:18
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    @Sam: My former girlfriend which has a very light sleep hiked in Southern France and waked up to find out that someone has stolen her rucksack which she used as cushion under her head. Commented Jan 30, 2014 at 12:30

A basic rubber "door stop" is probably a good idea to stop sudden rapid intrusion,
a properly sized prop with a non slip end under the door knob is said to work well,
and a chest of drawers against the door may slow people down.


attempts to stop serious violent and lawless invaders may cause more problems than they prevent.
Consider whether this is the case when taking precautions.
If so, you may not wish to visit at all or may need to enter the local "arms race".
Some years ago a journalist attempted to hold a door shut against intruders in Afghanistan. - successfully enough that they shot him through the door.
He died :-(.
His fellow room-mates were robbed but, I understand, lived.
It's possible that all may have been killed if he hadn't resisted or that none would have been.

A friend of mine in Papua New Guinea was one of 3 men who were robbed at shotgun point by "Rascals".
He was certain that he was going to be killed but none of them were physically harmed - he lost a watch and some money.
If he had locked himself in their vehicle the outcome may have been worse. Or, it may not.

ie decide in advance what course you wish to take in such situations.

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    Right. Currently I usually move a piece of furniture in questionable environments to the front of the door. The goal for it to make a lot of noise so that I can react and possible escape rather than being a sleeping victim.
    – Itai
    Commented Dec 16, 2013 at 1:54
  • I would still consider to rather be a sleeping victim of theft than a dead person after confronting someone.
    – uncovery
    Commented Dec 16, 2013 at 2:47
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    @uncovery:False dilemma. Neither will an intruder limit his options to stealing because you are sleeping nor will an alarm cause that you automatically confront someone which has the only option to kill you. Commented Dec 19, 2013 at 23:06
  • @uncovery if the intruder is violent enough to knock down a solid hotel door (not thinking about some dinky run down place where he can simply lift the door out of its hinges here) he's not going to let you live simply because you appear to be asleep. He'll assume you're awake and memorising his face and shoot or knife you to get rid of a potential witness who can identify him.
    – jwenting
    Commented Dec 20, 2013 at 9:20
  • @jwenting I do not think anyone talked about breaking down a closed door. A doorstop would not prevent that anyhow.
    – uncovery
    Commented Dec 20, 2013 at 9:51

I do not think you will turn up with a satisfactory solution with the term "door stop" since anything that I would call a doorstop (something that wedges between the lower edge of the door and the floor) is highly dependent on the floor type. On a carpet floor, certain materials might have a completely different effect than on tile/marble.

Further, even if there are chains installed, doors can be opened as you can see in this youtube video and also here. On top of that, there is a serious security flaw with a very widely distributed hotel lock.

When it comes to security, I would consider against whom/what you actually want to protect yourself and then act accordingly. Are you afraid your valuables are being stolen? Maybe the room safe is the best choice then. Or is someone after you personally? Try to figure out how to lower the risk of you being a target instead of trying to prevent the consequences of you being a target to happen.

Since on the downside, if someone is determined to get YOU as a specific target, there is little you can do. On the upside, there is probably a lot you can do if someone randomly picks you or your hotel room as a target to keep the damage low without trying to prevent them to enter your room, which is likely much more difficult.

  • Indeed, I was thinking about a random targeting. If it is personal, you are completely right that my chances are much slimmer.
    – Itai
    Commented Dec 16, 2013 at 1:55
  • @Itai against random events, selecting a higher class hotel with better installed security and more reliable night watch men is likely a better option than home made attempts to keep a plywood door shut that can be simply splintered or lifted out of its hinges, bypassing any locks or security devices you as a guest can install.
    – jwenting
    Commented Dec 20, 2013 at 9:22

Browsing around the internet I stumbled on this doorstop. Quoting the product page:

Detects forced entry through doors / Loud 110dB+ alarm sounds when the door is opened / Strong deterrence against intruders / Easy to install / Indoor use only. Alarm sounds loudly when there is an attempted forced entry through a door - A great form of theft deterrence.

It sounds like something you are looking for.

Full disclosure:
I am not affiliated with the manufacturer or seller in any way. Just found this and it reminded me of this question.

  • 1
    This is the one I bought not very long ago. It works well (luckily in controlled test, no intruders yet), cost me $12 but the link now has it for less than $9. A nice thing is that it is light enough to add to my carry-on without making it feel any heavier.
    – Itai
    Commented Jan 19, 2014 at 18:03

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