Nikon L31 has a
16.0MP 1/2.3' (6.17 x 4.55 mm ) sized CMOS sensor . On the other hand, Kodak Touch has a
14.0MP 1/3-inch (4.8 x 3.6 mm ) sized CCD sensor .
Below you can see the L31 and Touch sensor size comparison.
As seen above, Nikon L31 has a 1.6x Larger sensor area than Kodak Touch. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.