Scientific publications (Mejdell et al. 2016; Baragli et al., 2015; Gabor and Gerken, 2010; Cooper, 1998) recently demonstrated that horses can be teached to mark and signalize their physical condition.
My prototype is designed that way to help both humans and horses communicate with each other. The target user is a horse, who signalizes her physical state pressing the preinstalled button at the stall. When she presses it, lights implemented inside are switched on, and the signal is being sent to the owner on the mobile app so that he can know that the horse wants a blanket (horse rug) to be put on.
Prerequisites: the horse knows letters and basic interaction with a human in an alternative way, also she knows the meaning of letters and associations which comes with each letter.