I think before - the best way to protect a window was to have a foil running around the glass..

 

Now I see a lot of electronic gadgets. However I am not sure how reliable they are.

 

Say vibration sensor. I guess it is easy to cut glass above/below such a sensor with diamond cutter and simply disconnect it with a knife or undo latches and open window slowly or get through not disturbing the sensor using the hole... I mean - if the intruder is an idiot and will smash the window with a brick it works but otherwise - unlikely... am I right?

 

is there other means to protect glass area? If the window is obscure and design and beauty considerations arent important - is there more reliable perhaps mechanical sensors?

Foil has the same problem as a vibration sensor.

If the risk is that high and the property is attracting that grade of intruder, basic alarm systems are not up to it.

 

Most breakins are brute force where the intruder has no skills in this area or access to the equipment required to do it.

 

Vibration sensors need carefull placement and setup. But you also need a contact to prevent the window being opened without vibration and as such not detected.

If this is a concern (and im unsure of your angle at the moment) you need to be using grade 3 equipment. A grade 3 contact must under the standard detect or ignore a foreign magnet designed to defeat the contact. This could be backed by a vibration sensor on the window (if relevant), glassbreak detector etc. You would also need a grade 3 antimask dualtec protecting the room. This would all be considered as part of the design.

understood. thank you