Patent ID: 8538067

Claim:
A process to make secure a personal portable object comprising a body of the personal portable object, a microchip, a printed image and a device to enable said personal portable object to communicate with an entity external to the device the process comprising: generating a first image feature vector using an image file and an insertion algorithm, wherein generating the first image feature vector comprises: dividing the image file into a first number of blocks to obtain a first set of blocks, dividing the image file into a second number of blocks to obtain a second set of blocks, wherein the first number is different than the second number, selecting a first block from the first set of blocks and a second block from the second set of blocks, wherein the selecting uses a pseudo-random sequence, and wherein the first block comprises a different number of pixels than the second block, and obtaining a first feature from the first block and a second feature from the second block to generate the first image feature vector; storing the first image feature vector in the microchip; using the printed image obtained by a scanning device to generate a second image feature vector; and using a read-back algorithm to match the first image feature vector and the second image feature vector.