Thanks so much for asking. We’re looking at some changes/improvements for the “coming soon” 3.4 groov version. But in the meantime, something you can try now in 3.3…
A work-around (at least for browsers, not mobile), is to create a link on the page using an a user’s API key that DOES have access.
For example, you can download my lamp temperature data here: https://mary.groov.com/api/v0/data-logging/683_0_10_2_false/scanned-data.csv?api_key=XcJBX8AAwzJusPuQLauehTFvZ65EC6Vu
Note: that last part, the api_key, is from an editor-level user, and I got it by logging in as an editor, and right-clicking on the link/pen I wanted on my trend.
This means I can log in as a kiosk user (e.g. rest/rest on: https://mary.groov.com ) and still get that data via the editor’s endpoint, like the link circled below (which is just a navigation gadget w/the URL I mentioned above):
Make sense? Do you see what I’m saying there?
Thanks again for the great question/suggestion, keep 'em coming!