Here is another facet of life and the way people do things here in Asia that is kind of interesting. Just like anywhere else in the world, people want to protect their homes and businesses from intruders and install security devices to ensure that their property is safe. In the west, we might use an alarm or barbed wire to protect property. In Asia, alarms are in use here and there but alarms are expensive and so is barbed wire. Not to worry, there is plenty of broken glass laying around and with a little bit of work, it can be just as effective at keeping people from hopping your wall as razor wire.
There is a saying throughout much of SE Asia, although it is popularized in Thailand the most;"same same but different." I hate this saying because people use it so much to describe the similarities between the west and the east or anything else for that matter, that they actually make T-shirts that are a common site on the backs of many farang/falang in the hostels and bars of the region. As much as I hate the phrase, I guess it is appropriate in this instance. Glass placed properly in some cement on top of your wall is just as effective as barbed wire. Furthermore, it is also a good visual deterrent… I definitely would not want to try climbing this wall even if I had all of my shots.