From what is written in your email please do not think me rude in saying that it is clear that you have a better knowledge of our product than a normal customer, allowing me to go into more technical depth regarding the nuances of GPS stolen vehicle detection.

As with all technology there are always ways and means of being able to disable any protective measures put in place. Agreeably the visibility of ######## would be a very big disadvantage for such a service. However, I am informed that our engineers never fit ######## in a location on show to any would be thieves. The unit is fitted covertly along with the rest of the unit meaning any thief would have to have a very impressive knowledge of stolen vehicle tracker installation to be able to tamper with the system. If this is not the case and you have a ################## then we would strongly recommend going back to the original installer as the covert nature of our system is its premium selling point.

Considering the product attributes of the competitors on the market many rival products are much less technically advanced. For example, Tracker actually works on the FM radio signal and so can be easily blocked from transmitting a signal by blocking devices that are purchasable from less reputable sources. We are so far unaware of any such technology that can block ########. It is for this reason that our product has been awarded a ‘Q’ standard from Thatchum, the independent body that evaluates stolen vehicle device effectiveness and is made up of a coalition of all of the top insurance companies. Many of our rival products have not attained such a rating.

In conclusion, although we fully accept that our product, as with any technology, has its weaknesses, the measures that we have put in place to make the system as covert as possible yield very high recovery rates of stolen vehicles, and with our technological infrastructure in place covering nearly all roads in Britain and a good working relationship with Police Constabularies all over the country means that in reality there are few product offerings on the market that are better for its purpose.

Many thanks for you reply, it was much appreciated. As you mentioned I have good knowledge of tracking devices, and am speaking from some considerable experience.

There are some fundamentally basic principals to any GPS tracking system, regardless of its application, marine, car, plane etc.

################################################## ################################################## ##############################

Due to the miracles of miniaturisation, ######## can be quite small, but not invisible! Typically these are like ##########################.

Basically all a thief has to do is look for ###########.

With regards to blocking a ##### signal, it can be done in three seconds. Place any ################# and it is rendered useless. I appreciate that your engineers do a very good job at trying to covertly install the system, but they cannot ############ in this way, it is just not possible!

With all due respect 'I think' you will find that the GPS is only used to position the vehicle i.e. get absolute Lat & Long (or Easting/Northing), there will be another communication medium transmitting this data to your network control center, either FM (dodgy) or GSM. Either way it is easily scrambled. GSM scrambling devices can be purchased off the shelf nowadays.

I am not trying to condemn your product! It really is in my own interest to try and improve security on my vehicles. But if something is blatantly overlooked like the location #########, I find it hard to endorse the product.

Also, it would be relatively easy to make a #########, if not already available. In all honesty, a switched on thief would only have to ############### and he would completely block all signals #########. He would either ######### so no signals got through, or would cause so much multipath (indirect receivable of GPS pseudo range observables) that the position would be too erroneous to use.