The invention relates to a magnetic stripe reader, and more particularly, to systems, devices and methods of directly extracting binary information embedded in a magnetic stripe using simple analog and digital signal processing techniques. The genotyping assay can be used to detect SNPs of a number of genes of interest that include, but are not limited to, the human multidrug resistance gene single nucleotide polymorphisms C3435T and G2677T, and cytochrome P-450 3A5 single nucleotide polymorphisms CYP3A5*3 and CYP3A5*6. A video display is contained within the vehicle which displays the image captured by the camera. The foldable stiffening insert is sandwiched between two flexible layers. The rolls are unrolled over the land area so that longitudinal edge portions of adjacent rolls adjoin one another.