Technique to associate an arbitrary alphanumeric sequence to objects in a picture (Method to securely retrieve long PIN codes (8 digits) and arbitrary passwords)
Original Publication Date: 2002-Sep-01
Included in the Prior Art Database: 2003-Jul-23
Up to now the mobile PIN (Personal Identification Number) codes used to access different banking services and functions in the mobile phone are lim- ited to 4 respectively 5 digits. Banks and credit card companies accept PIN codes based on 4 digits be- cause of the usability of their products. 4 or 5 digits to remember is more comfortable. Nevertheless a PIN code with more than 4 or 5 digits would be more secure for new mobile phone services.
Technique to associate an arbitraryalphanumeric sequence to objectsin a picture (Method to securelyretrieve long PIN codes (8 digits)and arbitrary passwords)
Information / Kommunikation
Idee: Carmen Santa-Cruz, DK–Aalborg
Up to now the mobile PIN (Personal IdentificationNumber) codes used to access different bankingservices and functions in the mobile phone are lim-ited to 4 respectively 5 digits. Banks and credit cardcompanies accept PIN codes based on 4 digits be-cause of the usability of their products. 4 or 5 digitsto remember is more comfortable. Nevertheless aPIN code with more than 4 or 5 digits would be moresecure for new mobile phone services.
The here presented technique allows the user toretrieve long PIN codes and passwords without re-ducing the usability of the service. It is based on theuse of two different objects. An arbitrary picture anda lattice of values which generation is based on thepicture. The generation of the lattice and its use forthe storage of PIN codes and passwords is describedin the following abstract. The new technique makesuse of selecting a group of different pictorial areas inthe picture. These areas could be different objects inthe picture (disconnected elements), and/or a givencontour or edge (connected elements).
For the human mind it is easy to remember objectsthat have a common denominator such like a sceneryand graphical information. So, it would be easier forthe user to remember a sequence of the selectedpictorial areas than a sequence of arbitrary numbersor letters. In the case of connected areas the retrievalof the memory is immediate, in case of disconnectedareas it is possible to use a mnemonic techniquenam...