| | | Trigger type | Physical | Digital |
| | What | Things | Inanimate material objects (e.g., pens, desks, cups, desks, and plants) | Digital artifacts (e.g., notifications, buttons, and pop-up windows) | | Where | Places | Physical environment (e.g., buildings, rooms, office premises, streets, and parks) | Digital environment (e.g., social networking platforms, mobile applications, and video games) | | Events | Co-location (e.g., physical presence at conferences and parties) | Distributed events (e.g., teleconferences, webinars, and a remote presence) | | Who | Agents | Animate beings (e.g., human beings, pets, and animals) | Artificial beings (e.g., chat-bots and artificial intelligent agents) |
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