счастливые обладатели дверей "открытием внутрь" могут установить, вместо задвижки,
Door Security Bar by Master Lock
Model 250D

Ideal For : Home & Apartment
Entry Doors
Interior Doors for Privacy
Garage Access Doors
Student Dorms
Perfect for Travel
Protection you can carry with you !
Features:
1. Non-Marring Yoke
Designed to work with most types of door hardware. Helps protect against finish damage.
2. Patented Locking
System Helps keep Master Lock Door Security Bar in place.
3. Designed to fit Most doors
Simple push button adjustment, requires no tools.
4. Aircraft Grade Aluminum
Withstands over 1000 lbs. of force.
5.Pivoting Ball Joint
Assures full contact with floor
6. Padded Foot
Provides sure grip on most floor surfaces and protects against finish damage.

Easy Installation and Removal:
Attaches or removes from from door in seconds without tools
Portable:
Lightweight, under 2 lbs.. Added security for your travel, fits in most suitcases and garment bags
Made in U.S.A

Это вам не какая-то там "испания"... и, практически, 100% безотказна... :)