On Board Defence

Contact details

  • 3 Haslemere Way, Banbury
  • OX16 5TY Oxfordshire
  • United Kingdom of Great Britain and Northern Ireland


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About Us

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Theft of vehicles without the keys or electronic compromise via the On Board Diagnostic (OBD) port is one of the UK's biggest issues related to criminal activity and the topic of most concern in relation to vehicle crime, as millions of cars and vans are currently vulnerable.

Latest figures from the Office for National Statistics (Source: ONS Statistical Bulletin, Crime in England and Wales year ending March 15) showed that theft of a motor vehicle increased by 1% across the country, from 75,308 year ending March 2014 to 75,809 ending March 2015, reversing the trend for declining vehicle theft over the past two decades.

The basic principles of vehicle security design have not reflected advances in technology in other areas of the vehicle, such as lighting or engines. As a result, thieves have been able to exploit weaknesses in security systems.

The majority of vehicle security systems are designed to prevent authorised users, ie. vehicle technicians, from tampering with the vehicle in any intrusive way. Security protocols have been integrated to prohibit the programming of systems in the vehicle without permission from the vehicle manufacturer.

However, EU competition law stipulates that non-OEM vehicle workshops must be allowed access to vehicle systems for the purpose of routine service and maintenance, via the OBD port. As well as providing a level-playing field for the aftermarket industry, these pre-programmed ‘back doors’ can be accessed by thieves using the same tools as repair technicians or automotive locksmiths.

The availability of sophisticated electronic attack tools online, which remain legal to trade, has effectively enabled criminals to steal vehicles to order.

On Board Defence has pioneered a security device designed to combat the growing problem of keyless theft, which is the first to secure Quality Assured certification from Thatcham Research.

PORTECTOR is a tamper-proof, electronic signal-blocking device, which disables a vehicle’s On Board Diagnostic (OBD) port, the access point used by thieves.

By preventing the transmission of data via the OBD port to the vehicle’s ECU, the immobiliser cannot be bypassed and the engine cannot be started. The system only permits authorised communication with the vehicle through the OBD port once the correct service card is presented to the system.

Range of services

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Based in Banbury, On Board Defence designs and develops innovative security products predominantly for the automotive aftermarket sector. Originally established to pioneer the protection of vehicle catalytic converters under its CATLOC brand, which has been adopted by numerous vehicle manufacturers, On Board Defence’s portfolio has grown to include a variety of bespoke security solutions for vehicle manufacturers, fleet, trade and retail customers.



OBD PORTECTOR is a discreet signal-blocking device that is professionally installed behind a...

On Board Defence 3 Haslemere Way, Banbury OX16 5TY Oxfordshire United Kingdom of Great Britain and Northern Ireland +44 8455/193902 info@onboarddefence.com

Exhibitor at the following trade fair

Automechanika 2016

13.09.2016 - 17.09.2016 Hall: 4.1 Stand: E 51