According to Connie Chan, runners of the Shanghai marathon can use a facial recognition product to easily buy photos of themselves running the marathon, automatically sourced from every photo of the race.
Face recognition commercialization:
Researchers at Carnegie Mellon University and Disney Research have developed a relatively cheap system of creating a touch wall using electrodes and conductive paint called Wall++. The smart wall system can operate in two modes; the first capactive sensing mode to detect touch; and the second electromagnetic sensing mode to detect and track an EM device's location on the wall.(H/T to Mikael for sharing this)