Cell phones, especially "smart phones", seem to have become ubiquitous. Actually, it is misleading to call many of these devices phones, as they are actually a portable and powerful computer that can be very valuable in the chemistry classroom. Currently, there are three major ways in which smart phones can be used for education. Smart phones include a Web browser, which gives access to the wealth of material on the World Wide Web (WWW); inexpensive applications (commonly called apps) expand this usefulness even further; and two-dimensional barcode labels can be used to create "smart objects". Taken together, these capabilities are creating a world of mobile computing that may have an impact on society, including chemical education, that may be even greater than the changes brought about by the personal computer. (Contains 1 figure.)