Provided herein are methods whereby item provider services can define unique offerings, including categories of products, individual products, and information requests, and link them to a trigger, enabling the item provider service promote the offerings to the end users. A trigger can include any unique and specially formatted media entity that, in conjunction with software on a mobile device, can be detected using sensors to initiate a workflow. Triggers may include, for example, specially formatted images, videos, audio signals, QR codes, GPS locations, Bluetooth beacons, or similar mobile-detectable entities, among others. Triggers may be defined and associated with an offering.