Apparatuses, methods, and program products are disclosed for tracking physical activity. One apparatus includes a processor, and a memory that stores code executable by the processor. The code is executable by the processor to detect, by use of the apparatus held by a first person, a second person in close proximity to the first person. The code is executable by the processor to track physical activity of the first person. The code is executable by the processor to transmit at least a portion of the tracked physical activity of the first person to an electronic identity corresponding to the second person to enable attaching at least the portion of the tracked physical activity of the first person to the electronic identity corresponding to the second person.