API Call --> it's for application-to-application messaging so if you don't have an external application (like the Hue lightbulb or Arduino) then you can forget about this
Audio --> MP3 only and used in Phone Calls or can be linked to in other content such as tweet etc. but primarily used in phone calls
Document --> usually PDF but it could be other document types like word or powerpoint. You can't directly publish this content but you can refer to it in other content and via Inventory
Inventory --> this can only be used with an external program like a website or mobile app. The external app uses our API to grab content from Conducttr. For an example, it's used extensively in this case study http://www.conducttr.com/success-stories/the-chatsfield/ - it's used for Jessie's inbox and the Safe Deposit box. When players log into the website they access documents based on what they've done in the story. The documents are hosted in Conducttr and pulled to the website via our API
Physical objects --> these are only used in the Whiteboard at the moment. We use the Whiteboard to sketch the "user journey" and this may include physical objects like a flyer or a handbag or something else. Right now you can't do anything interactive with them.