Bacteria can utilize many different things as vectors in order to promote their transmission. Insects, water, food, coughs and sneezes, sexual contact, and rain are just a few examples. The mobile phone appears to be no exception this rule. As part of BMS1035 Practical and Biomedical Bacteriology, an undergraduate module that I run, I get the students to to imprint their mobile phones onto bacteriological growth media so that we might determine what they might carry. From these results, it seems that the mobile phone doesn’t just remember telephone numbers, but also harbours a history of our personal and physical contacts such as other people, soil, etc.