Development of a Hand held device for Automatic License Plate Recognition

This paper describes the details of development of a hand held security device to help the security people at the entrances of big institutions/industries/apartments. The security people can scan the number plate of vehicles come at entrance using this device and the device will display whether the vehicle is authorised or unauthorised to enter to the premises. Provision is given to add/remove the registration number to/from the database. This device is designed around onboard computer, which is commonly termed as Raspberry Pi. The optical character recognition (OCR) technique implemented on this device is used for the identification of the registration number.