According to a new survey by Nielsen, the ability to be able to see images of products when shopping online, is the most important mcommerce-related capability. The survey was carried out in the United States and found that 62% of respondents' value that ability on a smartphone, with 63% thinking the same on a tablet. The survey also showed that nearly half of all smartphone users thought that having a mobile friendly site was an important factor while on a smartphone, and being able to read a product review achieved a similar score. The comparison between the smartphone and tablet results shows that the size of the text is thought to have higher importance on a tablet, as does the security of the website. Likely due to bigger mobile screens, however, online sales through smartphones doubled in 2015; giving total mcommerce sales a 26% share of America's total online retail market.