When considering the implementation of a mobile library site, it is not sufficient to
simply recognize that a large percentage of library patrons use mobile phones. The
particular types of devices they use and the degree to which they are web-enabled must
also be considered. The range of devices available can greatly impact the way you
develop your mobile library site. Paying attention to the types of devices your users
have can also help you to design mobile services that best meet their needs. The two
main devices described here are "smartphones" and "feature phones" (see Table I)