2. Take cable ties with you.

It may happen that some of your locks breaks down or you need to lock other compartments as well but you don't have an extra lock for this. Cable ties suit perfectly for locking bag compartments. Insert the cable tie through the loops of the zipper and pull it tight. This helps prevent small thefts that may take place when your attention is scattered. This also helps prevent small thefts that occur during the handling of your luggage (an airport employee can easily slip his/her hand into your bag and steal the first thing that he/she can get his/her hand on). To open the cable tie, you have to cut it.

3. Use a cable lock for locking your luggage while being on the train or in a waiting lounge.

We all tend to doze off during a long train journeys or in waiting lounges. Lock your luggage to a chair or post in order to avoid somebody stealing it by just taking it with.  

4. Mark your luggage so that it stands out.

It's rather sad when you discover in the hotel or at home that you have taken a wrong suitcase from the airport. Even worse when somebody has taken your suitcase by mistake because your suitcase could not been distinguished from other similar ones.

Use a bright coloured suitcase label or just tie a colourful scarf around the handle of your suitcase. This way your luggage is easily distinguishable for you as well as others.