the present invention achieves wireless delivery of media streams to portable devices for providing media information related to a show or attraction for the purposes of captioning , language translation , and assistive listening . as a person moves about a venue , the device receives infrared or radio signals from transmitters at venue locations . the device decodes each signal as venue location , event time , or device trigger for presentation on the device . the device memory contains audio , text , graphics and device playback may contain one or many of these stored contents . the stored content is synchronized with the user &# 39 ; s location , time of travel , time of day , time of a show , or an event in a show and may be in one or many languages . presentation of stored content on the device may also be altered by user preference , stored logic constraints , automatic learning of user behavior , or user interaction with other devices .