@Javi
What I do is on a 'motion at front door' get ISY to send me a text of the link to an IP camera. That link in my text would auto populate a single frame in my text. If I was lucky and the person was still standing there at the time I got the text and opened, and I could see image of the person in my text. However, if they were fast, walked up and did a delivery, I would see no one because of the lag.
If a tile had the ability to show the first image URL of the IP camera, you would essentially see that first frame. Then 'theoretically' just need to allow for a trigger to freeze that image. At that point if you selected the tile, it would just open the camera.
I use SWANN NVR cameras...with an app called Swann Security. I couldn't find any information if it has a URL.