These Anti Theft Security Number Plate fittings are a great accessory for your car, helping to prevent thieves or scammers from targeting your number plate. Easy to fit and remove, these fittings can be stored in the garage or glove box for convenient use whenever you need them. Anti-theft Number Plate Fittings. Secure your number plate, deterring theft and scams. Simple to install and remove, these fittings are easily stored for when needed.