The only way now to view the multi-focus images is via Lytro's desktop application, or using the Illum camera itself. All the living pictures we posted on our Illum mini-review, for instance, have now disappeared, leaving a black box, as shown below. The best you can do is use the app to export JPEGs or other conventional formats.
No other camera companies ever adopted light field-type tech, but it is being pursued by companies like Avegant, and Lytro itself, for virtual and augmented reality. Shuttering its online platform effectively marks the end of Lytro's consumer camera adventure, and will no doubt leave the (very few) Illum buyers bitter.
Update: Lytro users aren't taking the death of its online platform lying down, as it turns out. After many complaints, Lytro is considering turning the Living Picture hosting platform over to the user community. It's not a fait accompli, as Lytro says "there are some challenges to resolve around intellectual property and we cannot promise that it is possible." If you're interested in getting updates on this, and adding your name to the list of folks interested, you can click on the link here.